If there's one thing that united Democrats and Republicans in the Reagan era (besides their unfortunate fixation with perms), it was their near universal hatred of weed. Everybody was a cop back then. Walter Mondale, the Democratic candidate for president in 1984, called for another "War on Drugs" — all drugs. Ronald Reagan, for his part, believed that marijuana was "probably the most dangerous drug in the United States."

Fast forward to the 2020 election, when politicians have largely done an about-face, at least when it comes to weed. Politicians aren't just campaigning for medical marijuana, they're advocating for recreational marijuana to be legalized: explicitly, vocally, and on their campaign pages.

Were it not for the hundreds of thousands of people arrested for marijuana law violations every year, it's almost like the past 40 years of aggressive anti-marijuana drug policy didn't exist.

Here's what Daniel Mallinson, assistant professor of public policy and administration at Penn State Harrisburg, thinks of the tectonic political and cultural shift on marijuana legalization:

"It started in the liberal states. There was a big political shift there that has since shifted to more conservative, battleground states — specifically when it comes to medical marijuana," Mallinson told Mashable in a phone interview. "Even the majority of Republicans now support some form of legalization. That's a rapid political shift among individuals that's now being captured in state policy and brought to the national level."

Recreational marijuana is now legal in 10 states and Washington, DC, while medical marijuana is legal in 33. And the remarkable historical progress is only expected to grow.

Mallinson isn't surprised to see Democratic candidates latching onto this issue:

"Democrats are all jostling to be the most progressive right now. At least the ones who have declared already," Mallison said. "You have to check a box for marijuana legalization if you want to run in that space."

Will recreational marijuana legalization help candidates in the general election? Mallinson isn't so sure. The current 2020 presidential candidates have a range of views on the issue, not all of them exactly alike. Here's where each presidential candidate stands on legalized marijuana, and where they once stood — as much as they might try to deny it.

2020 Democrats

Where the Democratic candidates stand on marijuana legalization

Amy Klobuchar

Blazin' on through the snow: What's Amy Klobuchar's stance on marijuana? Image: stephen maturen/Getty Images

Minnesota will be voting on recreational marijuana in 2019. Despite widespread public support, it's unclear whether the bill will pass and where Democratic Senator Amy Klobuchar will stand. The candidate from Minnesota is considered one of the more centrist of the pack. And her position on legalization is somewhat more muddled than that of her opponents.

Klobuchar has signed onto the "Strengthening the Tenth Amendment Through Entrusting States (STATES) Act," which protects states that have legalized marijuana from federal meddling. So has Massachusetts Senator Elizabeth Warren. Unlike Warren, however, Klobuchar has not signed onto the Marijuana Justice Act, which would remove marijuana's classification as a schedule 1 drug in the Federal Controlled Substances Act.

Klobuchar has supported cannabis research in the past, especially as it applies to medical research. Although, its classification as a schedule 1 drug makes this nearly impossible. It's much harder for scientists to obtain legal samples of the drug when it's classified this way.

Her record on marijuana as Minnesota's Attorney General is much more conservative. In 2016, she was given a "D" rating by NORML (the National Organization for Reform of Marijuana Laws), indicating a "hard on drugs" stance.

Andrew Yang

Andrew Yang has called the criminalization of marijuana "stupid and racist" Image: AFP/Getty Images

Unless you’re deep in Politics Twitter, chances are you haven’t heard of Andrew Yang, the lawyer and tech entrepreneur. Yang’s home state of New York has already legalized medical marijuana and is poised to legalize recreational marijuana sometime in the near future, according to New York Governor Andrew Cuomo .

Yang has called the criminalization of marijuana “stupid and racist, particularly now that it's legal in some states.” He believes in full legalization and is fighting to pardon folks who were convicted of non-violent marijuana-related offenses.

While Yang isn’t particularly well known, he recently received just enough individual donations to appear in the Democratic primary debates . Yang is also advocating for something he calls The Freedom Dividend , which would provide a guaranteed monthly income of $1000 to every adult above the age of 18 — all on the grounds that automation will eventually wipe out millions of jobs.

Bernie Sanders

Bernie Sanders has one of the most progressive records on marijuana legalization in the Senate. Image: win mcnamee/Getty Images

Vermont Senator Bernie Sanders hails from one of the most liberal states in the country. In 2019, recreational marijuana was made legal in Vermont — not through a referendum, but through a vote in the state legislature. Vermont became the first state in the country to legalize marijuana using this route.

Sanders has long advocated for marijuana reform. In 1995, he co-sponsored a bill in the House that would authorize medical marijuana in cases of "life-threatening" and "sense-threatening" illness. In the decades following, Sanders became one of the most vocal advocates for marijuana reform. Four years ago, Sanders filed the first bill in the Senate to end cannabis prohibition. He has signed onto New Jersey Senator Cory Booker's Marijuana Justice Act and called for the de-scheduling of the drug.

Sanders has also demanded banking reform, hoping to make it easier for legal marijuana businesses to operate accounts. In 2016, Sanders became the first major presidential candidate from both parties to call for removing marijuana from the list of controlled substances.

He is largely considered to be one of the most marijuana-friendly candidates running for president.

Beto O’Rourke

Despite coming from a highly conservative state, O'Rourke has long advocated for marijuana reform Image: matt winkelmeyer/Getty Images for SXSW

After months of dilly-dallying and Instagramming his trips to the dentist, former Democratic Congressman Beto O’Rourke finally declared his candidacy on March 14, 2019. O’Rourke’s home state of Texas is largely hostile to legal marijuana. Recreational marijuana is banned and medical medical marijuana is severely restricted. In 2015, Texas passed the Compassionate Use Act , giving some people access to low-THC medical marijuana, but only if they were residents of the state and suffered from “intractable epilepsy.”

In the past, NORML , which grades politicians on where they stand on marijuana, gave O’Rourke a grade of B+. Despite coming from a conservative state, O’Rourke was an early advocate for marijuana reform . While in Congress, O’Rourke voted for multiple pieces of legislation that would expand medical marijuana and protect states where marijuana was legalized from federal intervention.

In March of 2019 , O’Rourke called for the federal legalization of marijuana, as well as a wave of criminal justice proposals that would affect those impacted by the drug war. Like Cory Booker, O’Rourke is advocating that people who’ve been incarcerated solely for marijuana possession have their records expunged.

And, ahem, here is O’Rourke singing “Roll Me Up And Smoke Me When I Die” with Willie Nelson on stage in the summer of 2018.

Bill de Blasio

NYC mayor Bill de Blasio has a mixed record on marijuana. Image: Sean Rayford/Getty Images

Democrat Bill de Blasio is currently the mayor of New York City, where medical marijuana is legal but recreational marijuana remains illegal. Though the mayor was historically opposed to the legalization of recreational marijuana, he changed his position in December of 2018 shortly after Governor Cuomo announced that he now supports legalizing cannabis.

As mayor , de Blasio has attempted to reduce the criminal penalties for cannabis-related offenses. However, enforcement remains an issue.

In 2014, for example, de Blasio instructed to the New York Police Department to issue summons in lieu of arrests for those in possession of 25 grams or less of cannabis. However, because the NYPD was still able to arrest people for public consumption or for intent to sell in a prohibited zone, cannabis possession arrests were higher in 2014 to 2016 than they were from 1994 to 1996, in the notoriously anti-drug Giuliani administration, according to a report from the Drug Policy Alliance.

There's no way we can fix our subways and improve service without a new source of revenue. Congestion pricing, an internet sales tax and a tax on legalized marijuana are part of our plan to get trains running again – because New Yorkers have places to go.https://t.co/xat4vmaLOa — NYC Mayor's Office (@NYCMayorsOffice) February 28, 2019

De Blasio has also suggested legalizing marijuana and using tax money from sales to improve the Metropolitan Transportation Authority, including New York City's crumbling subways.

It is believed that de Blasio would help reform marijuana laws for the better if elected president, despite a mixed record on the drug.

Cory Booker

Booker is one the most vocal advocates for marijuana legalization. Image: scott olson/Getty Images

New Jersey Democratic Senator Cory Booker is one of the more progressive candidates when it comes to marijuana reform. It helps that he comes from a progressive state. In November of of 2018, New Jersey's state Senate and Assembly passed legislation easing the way for marijuana legalization. Governor Phil Murphy is now working with Senate President Stephen Sweeney to establish a more formal path for legalization and government regulation and taxation of the drug.

They should have Booker's support. In 2017, Booker authored the Marijuana Reform Act, which had multiple, historic, and radical elements: expunging convictions for those prosecuted for marijuana-related offenses, punishing states for disproportionately targeting groups of people (historically, that's people of color), and legalizing the drug on a federal level.

People who were serving federal sentences for marijuana-related offenses would be eligible for re-sentencing, presumably for a lighter sentence.

It was a transformational piece of legislation that could have improved the lives of millions of people. But it never made it out of the Senate, thanks to a secure Republican majority.

Every current Democratic presidential candidate who is also serving in the Senate has signed onto Booker's legislation, with the exception of Minnesota Senator Amy Klobuchar.

Unlike other senators on this list, Booker has a strong record on legalization. As far back as 2012, Booker, then mayor of Newark, New Jersey, decried the drug wars, accusing the federal government of "pouring huge amounts of our public resources into this current effort that is bleeding our public treasury and unnecessarily undermining human potential."

Elizabeth Warren

These guys make my heart happy. pic.twitter.com/g8OK42DcKL — Elizabeth Warren (@ewarren) February 12, 2019

Massachusetts Senator Elizabeth Warren comes from a progressive, marijuana-friendly state, so it's not surprising that she's one of the most vocal advocates for legalization. In 2016, Massachusetts voted to legalize cannabis recreationally and in November of 2018, began selling cannabis to adults.

Warren has taken her advocacy to a federal level. Along with Senator Cory Gardner of Colorado, Warren is one of the lead sponsors of the STATES Act, which protects states in which marijuana is legal from federal interference. Cannabis is still illegal on the federal level.

She's also signed onto multiple major drug policy reform bills, including the Marijuana Justice Act, a transformative piece of legislation that would financially punish states that fail to legalize marijuana and who disproportionately incarcerate or arrest people for marijuana-related offenses.

Because of the legal status of marijuana on the federal level, cannabis companies are often barred from using federally-backed banks. Like Sanders, Warren has supported cannabis-related banking legislation, designed to push the industry away from cash-only models and integrate it with the modern banking system, where it's safer for businesses and will be better monitored.

Warren might look like the model of marijuana reform now, but it wasn't always that way. In her 2013 campaign against Republican Dan Winslow, she came at her opponent with this accusation: "He has a 100-percent ranking from the gun lobby and he’s for the legalization of marijuana. He wants us armed and stoned."

Jay Inslee

Washington Governor Jay Inslee is from one of the most marijuana-friendly states in the country Image: Getty Images for SXSW

Washington Governor Jay Inslee is from one of the most marijuana-friendly states in the country. In 1998 , Washington became one of the first states to legalize medical marijuana. In 2012 , Washington, along with Colorado, became of one of the first two states to legalize recreational marijuana.

Inslee has long been an advocate for legal weed. As a Congressman , Inslee signed multiple pieces of legislation that would protect medical marijuana from federal intervention. As governor, Inslee was an even more vociferous supporter. Earlier this year, Inslee pardoned thousands of individuals who were convicted of possessing a small, misdemeanor-level amounts of marijuana and had no other criminal convictions.

In 2012, Inslee was more lukewarm about recreational marijuana and opposed I-502, an initiative which would have legalized the plant. By 2018, however, Inslee had fully evolved, joking to Bill Maher that his home state had the “the best weed in the United States of America.”

Inslee has also called out the President for failing to stick to his campaign pledge to leave states who had decriminalized marijuana alone.

"Wouldn't it be wonderful if the first time Donald Trump said something that was actually true, if he said he'd leave us alone on our marijuana decriminalization?" Watch Gov. @JayInslee on last night's #RTOvertime: 420 Edition. pic.twitter.com/6J9oxEKJEU — Real Time (@RealTimers) April 21, 2018

Among the presidential candidates, Inslee is one of the least known. He is, however, likely to be one of the strongest advocates for legal marijuana among a very crowded field.

Joe Biden

Joe Biden doesn't have the best history with marijuana reform. Image: Scott Eisen/Getty Images

Uncle Joe isn’t exactly a favorite among marijuana advocates. While most people associate harsh anti-drug policy with Republicans, Biden was one of the chief Democratic architects of the drug war. As a Democratic Senator, Biden co-sponsored the Anti-Drug Abuse Act of 1988, which enacted mandatory minimum sentences for marijuana-related convictions. He was also one of the chief sponsors of the widely criticized 1994 Violent Crime Control and Law Enforcement Act, which ushered in a new era of mass incarceration. And in 2010, Biden called marijuana a “ gateway drug. ”

Not exactly the stuff of legalization advocates’ dreams.

However, Biden has evolved with time , noting in January 2019 that some of his aggressive tough-on-drug-crime legislation was a “big mistake that was made.” As Obama’s Vice President, Biden didn’t push for marijuana legalization. He did, however, tell Time Magazine in 2014 that “I think the idea of focusing significant resources on interdicting or convicting people for smoking marijuana is a waste of our resource.”

Biden added that it was “That’s different than [legalization]. Our policy for our Administration is still not legalization, and that is [and] continues to be our policy.”

Despite officially announcing his 2020 run on April 25, Biden has yet to announce a stance on marijuana reform.

Julián Castro

Julian Castro, a less well-known candidate, has a record as a strong progressive. Image: Edward omelas/Getty Images

Democrat Julián Castro hails from Florida, where only medical marijuana is legal. Recreational marijuana legalization is a long way off — advocates are currently working to ease access to medical marijuana, which was only made legal in 2016.

Castro previously served in Obama's White House as the Housing and Urban Development Secretary. Consequently, he doesn't have a Congressional voting record on marijuana, making his views a bit harder to decipher.

Castro has previously made social media posts in support of at least partial legislation. Two years ago in a Facebook post, he discouraged the federal government from cracking down on recreational marijuana crimes.

A mistake. Colorado and other states have shown we can sensibly legalize marijuana with reasonable controls. https://t.co/MknXhJ0cnr — Julián Castro (@JulianCastro) February 26, 2017

Castro has also said he supported voters passing marijuana legalization laws by state.

It'll be interesting to see how Castro can distinguish himself in an already crowded Democratic field.

Kamala Harris

Kamala Harris has come a long way on marijuana legalization. Image: chip somodevilla/Getty Images

Oh, California Senator Kamala Harris. Harris, who now admits she both smoked marijuana and inhaled it in the past, wasn't always an advocate for legalization. Her home state, meanwhile, has been one of the drug's most vocal advocates: a whopping 57.1 percent of voters voted yes on Proposition 64 in 2017 to legalize marijuana.

It took until 2015 for the former attorney general to come out in support of medical marijuana. Back in 2014, she laughed in the face of a local news reporter who asked if she supported legalizing recreational marijuana.

Harris has a new book in which she advocates for clearing the criminal records for people convicted of non-violent marijuana offenses, as well as for legalizing the drug.

The senator has come a long way from her earlier, more prosecutorial days, but it may not be enough to make some legalization advocates happy.

Kirsten Gillibrand

Gillibrand has signed several key pieces of marijuana legalization. Image: alex wong/Getty Images

New York Senator Kirsten Gillibrand has one of the most liberal voting records in the Senate. It's easy for Gillibrand to hold this position, given her home state's support for the drug (New York is poised to become the 11th state to legalize recreational cannabis). And while we personally don't know if she's ever smoked, Gillibrand has signed her name to several key pieces of marijuana reform legislation, including Booker's Marijuana Justice Act.

She'e been outspoken about the effects of drug war policy and the racial inequities in the criminal justice system, even prior to announcing her candidacy.

DOJ should investigate how pharma helped create the opioid crisis, not institute policies that take marijuana based medicines from patients and needlessly target non-violent minority youths. — Kirsten Gillibrand (@SenGillibrand) January 4, 2018

Marijuana laws in this country are discriminatory and unjust – and communities of color are paying the price. Congress needs to pass the Marijuana Justice Act to finally address the decades of harm caused by our failed drug policies. — Kirsten Gillibrand (@SenGillibrand) August 25, 2018

Discriminatory drug policies rob black and Latino families of their futures. I’m fighting to help right this wrong, but I need 254 more people to stand with me before 11:59 p.m. tonight. Sign the petition to urge Congress to decriminalize marijuana. — Kirsten Gillibrand (@SenGillibrand) August 9, 2018

After starting her career as a conservative, Blue Dog Democrat, Gillibrand has leaned hard to the left in recent years. I expect her to follow her party's progressive wing on this issue in the years to come.

Pete Buttigieg

Buttigieg could become America's first openly gay president. Image: alex wong/Getty Images

Pete Buttigieg is one of the least-known potential Democratic candidates on this list. As a result, the chances of him winning the nomination are slim.

Buttigieg hasn't spoken on a national stage about his views on marijuana legalization. However, he is largely considered a progressive in the city of South Bend, Indiana, where he serves as mayor. His home state of Indiana is far more conservative: Neither recreational marijuana nor medical marijuana are legal in the state, and progress on the issue has been slow.

A representative from Buttigieg's office told Mashable that the mayor supports legalization.

Steve Bullock

Montana Governor Steve Bullock has not yet made a public stance on recreational marijuana, but has been in favor of medical. Image: William Campbell-Corbis via Getty Images

Democratic Governor Steve Bullock hails from the state of Montana, where recreational marijuana is illegal. Medical marijuana is legal but well regulated. In 2004, voters approved the Montana Medical Marijuana Allowance Initiative which legalized medical marijuana in the state. In November 2016, voters approved ballot initiative I-182, which expanded the program and allowed post-traumatic stress disorder (PTSD) to count as a qualifying condition.

In May of 2017, Governor Bullock signed Senate Bill 333, which imposed additional regulations on the medical marijuana industry, including a quarterly tax on marijuana businesses. A new bill, Senate Bill 265 , would allow Montana residents to shop at multiple dispensaries, improving access for patients. It has yet to be signed by Governor Bullock.

Bullock has received a "B" rating from NORML , which grades politicians on their marijuana records and stated policy positions. While Bullock says he voted "Yes" to approve medical marijuana in 2004, he has yet to make any social media posts on recreational marijuana. In his capacity as governor, Bullock has worked to both protect medical marijuana and more effectively regulate the industry. In 2015, Bullock signed HB 463 , which would require that police obtain a conviction before they seize the assets of a property owner believed to have committed criminal activity. Asset forfeiture is often used to penalize those accused of drug-related offenses.

It is unclear how Bullock will regulate recreational marijuana if elected president. We have reached out to his campaign and will update this post if and when they respond.

Tulsi Gabbard

Gabbard has one of the most progressive records on marijuana in the House. Image: Getty Images for Teen Vogue

Currently, the Hawaiian legislature is considering marijuana legalization. And, questionable views on Assad aside, Hawaiian Congresswoman Tulsi Gabbard is the one most progressive candidates when it comes to marijuana legislation. According to Marijuana Moment, she was lead sponsor on a bill that would require the government to research the effects of marijuana legalization on a state level.

She has called on the federal government to decriminalize marijuana, encouraged the federal government to fund additional research on medical marijuana, publicly explored the relationship between opioid abuse and punitive marijuana laws, and slammed former Attorney General Jeff Sessions for taking a regressive approach to drug policy.

Gabbard is one of the most visible advocates for legalized marijuana in the field, even if her presidential polling numbers are currently very low.

2020 Independents and Republicans

Where the candidates outside the Democratic Party stand on marijuana legalization

Howard Schultz

Do you really want to know the CEO of Starbucks' views on marijuana? Image: santiago felipe/Getty Images

Howard Schultz comes from progressive roots: His home state of Washington was the first in the country to legalize recreational marijuana in 2012. That being said, Pop-Tarts got more likes on Twitter than Starbucks CEO Schultz did when they announced that they were running for president, so I'm not entirely sure we need to be concerned with a Schultz presidency. Because Schultz has no political experience to speak of, his views on the marijuana issue are unclear.

He is, however, the founder behind the Frappuccino, which is its own kind of intoxicant. So there's that.

We have reached out to Schultz for comment and have not yet received a response.

Donald Trump

President Trump's official policy position on marijuana is:(*)#$@)$(*$& Image: michael reynolds-pool/Getty Images

Prior to becoming elected, Trump said he believed marijuana legalization should be left up to the states. In New York, Trump's liberal home state, Governor Andrew Cuomo plans to legalize the recreational drug (medical marijuana is already legal) and establish an Office of Cannabis Management.

Upon becoming president, however, Trump appointed Jeff Sessions as attorney general. Sessions proceed to lift a critical Obama-era marijuana policy that made it clear that the federal government would not intervene with states who had legalized marijuana.

In 2017, White House Press Secretary Sean Spicer said the Trump administration was considering strengthening anti-marijuana enforcement on a federal level.

It's unclear whether the president will be a candidate in 2020, depending on his incarceration status, but it's important to keep his political worldview (absolute ideological chaos) in mind.

Even if there's a Democratic president in office, it'll be hard to push comprehensive marijuana reform, depending on the partisan makeup of Congress. Still, it's an exciting time for marijuana advocates. A record 6 in 10 Americans now support legalization, following a decade of steady progress on the issue.

Change will happen — in fact, it's already happening.

We'll be updating this post as more candidates announce their runs for office.

UPDATED: May 29, 2019, 10:18 a.m. EDT