New Jersey may soon become the 11th state to legalize marijuana. And, by the time voters head to the polls for the 2020 presidential election, even more states may join the ranks of those with legal weed.

But where do the candidates stand on marijuana legalization heading into the next U.S. presidential election? Here's where the candidates stand on the issues.

We'll be looking at two key pieces of federal legislation as part of candidates' voting records heading into the 2020 presidential election: the Marijuana Justice Act and the Strengthening the Tenth Amendment Through Entrusting States Act, or STATES Act.

The Marijuana Justice Act, sponsored by Sen. Cory Booker, D-N.J., would declassify marijuana as a schedule 1 controlled substance, essentially legalizing it federally. It would also penalize states that continue to arrest people for marijuana use at racially disproportionate rates. Booker reintroduced the bill on Feb. 28.

MORE: Booker kicks off nationwide marijuana legalization push

Like New Jersey Gov. Phil Murphy, Booker has pushed for legal weed as a way to correct decades of racially-disproportionate arrests for marijuana possession. New Jersey police officers arrest African Americans for marijuana possession at a rate nearly three times higher than their white counterparts, despite similar usage rates.

The STATES Act, sponsored by Sen. Elizabeth Warren, D-Mass., protects states that have marijuana industries — both recreational weed and medical marijuana — from federal intervention.

We'll also look at other bills sponsored by the candidates, their own public thoughts on legal weed and scorecard grades from the National Organization for the Reform of Marijuana Laws, a national legal weed advocacy group.

Before we go any further: The Asbury Park Press and USA TODAY NETWORK New Jersey will continue diving into the New Jersey marijuana legalization debate, with regular updates, mailbags, a discussion group and live events.

But we can only do so with your help. So consider a digital subscription — for a limited time, get a three-month subscription for just $1!

Joe Biden

Most recent role: Vice-President of the United States (2 terms)

Home state: Delaware

Party: Democratic

Marijuana voting record

While Biden did not cast any votes on legal weed during his time as vice president, he was one of the major Democratic supporters of the Reagan-era policies that make up the crux of the "war on drugs," which marijuana legalization opponents say they're trying to end.

As chairman of the Senate Judiciary Committee, Biden authored or sponsored laws that instituted mandatory minimum prison sentences for drug crimes, including possession.

Biden's position on marijuana specifically has softened since then:

In his own words

"I think the idea of focusing significant resources on interdicting or convicting people for smoking marijuana is a waste of our resources. That’s different than (legalization). Our policy for our Administration is still not legalization." (TIME Magazine, Feb. 6, 2014)

NORML scorecard

N/A (NORML did not release scorecards when Biden was still in the Senate. But in a statement released Thursday, NORML Executive Director Erik Altieri called Biden's record "abysmal" and said he held "the worst record on cannabis-related policy" of any presidential candidate).

Cory Booker

Current role: Member, U.S. Senate (1st term)

Home state: New Jersey

Party: Democratic

Marijuana voting record

Booker, 49, is the primary sponsor of the Marijuana Justice Act and an original co-sponsor of the STATES Act.

He also introduced the Compassionate Access, Research Expansion and Respect States (CARERS) Act of 2015 that would protect medical marijuana users in states with medical programs and require the Drug Enforcement Administration to license additional marijuana grow facilities for federal research.

In his own words

"Federal marijuana policy has long overstepped the boundaries of common sense, fiscal prudence & compassion. We should legalize marijuana now & help those who have suffered due to its prohibition." (April 20, 2018)

NORML scorecard:

A+

Pete Buttigieg

Current role: Mayor of South Bend, Indiana

Home state: Indiana

Party: Democratic

Marijuana voting record

Buttigieg, 37, hasn't publicly announced whether he supports of or opposes marijuana legalization. Buttigieg's only real action regarding the drug has been the ban of "synthetic marijuana," such as K2, in South Bend.

In his own words

"'Synthetic marijuana' gets far less attention than opioids, but it too can be lethal. Our community continues to work proactively on the issue." (April 11, 2018)

NORML scorecard:

N/A

Julian Castro

Most recent role: Secretary of Housing and Urban Development

Home state: Texas

Party: Democratic

Marijuana voting record

The only formal action Castro has taken on legal weed is a 2014 HUD memo that said owners of federally funded housing properties could bar people who used cannabis, including medical marijuana.

Castro hasn't come out publicly on legal weed, but he's criticized the Trump administration whenever federal officials have mentioned the possibility of cracking down on states with recreational marijuana.

In his own words

"Colorado and other states have shown we can sensibly legalize marijuana with reasonable controls." (Feb. 26, 2017)

NORML scorecard:

N/A

Tulsi Gabbard

Current role: House of Representatives (4th term)

Home state: Hawaii

Party: Democrat

Marijuana voting record

Gabbard, 37, signed onto both the Marijuana Justice Act and STATES Act in the House. She also supported the Secure and Fair Enforcement (SAFE) Banking Act, which would prohibit federal regulators from taking action against banks that had cannabis customers.

In her own words

"Our criminal justice system is broken & unsustainable, both for our government and society. Ending the marijuana prohibition is a long overdue common-sense step to take to end the destructive cycle that is turning everyday Americans into criminals." (July 24, 2018)

NORML scorecard:

A+

Kirsten Gillibrand

Current role: Member, U.S. Senate (2nd term)

Home state: New York

Party: Democratic

Marijuana voting record

Gillibrand, 52, signed onto the Marijuana Justice Act but hasn't signed onto the STATES Act. She was also an original co-sponsor of the CARERS Act, which protects medical marijuana users, and the MEDS Act, which would streamline certain processes related to marijuana research.

In her own words

"Injustice against one of us is an injustice against all of us. We need to fight discriminatory marijuana policies, end mass incarceration and come together to create an economy where the playing field is fair for everyone." (Nov. 16, 2018)

NORML scorecard:

A

Kamala Harris

Current role: Member, U.S. Senate (1st term)

Home state: California

Party: Democratic

Marijuana voting record

Harris, 54, has signed onto the Marijuana Justice Act but not the STATES Act. She also supported the SAFE Act to protect banks with cannabis customers from federal intervention.

In her own words

"It’s time to get with the times and make marijuana legal at the federal level. The priority of our law enforcement needs to be serious and violent crimes, not somebody smoking a joint on the street." (June 5, 2018)

NORML scorecard:

A

John Hickenlooper

Most recent role: Governor

Home state: Colorado

Party: Democratic

Marijuana voting record

Hickenlooper, 67, was initially opposed to the ballot referendum that legalized weed in Colorado, but eventually came around to support it. As governor, Hickenlooper signed into law bills that added more qualifying conditions for medical marijuana use and sealed criminal records related to now-legal marijuana crimes. But he has also vetoed legislation that would allow dispensaries to open up "tasting rooms," as well as imposed limits on home grown cannabis.

In his own words

“Ultimately, I haven’t come to a final conclusion yet, but I think it’s looking like this is going to be — for all of the flaws and challenges we have — a better system than what we had.” (Nov. 14, 2018)

NORML scorecard

B

Jay Inslee

Current role: Governor

Home state: Washington

Party: Democratic

Marijuana voting record

Inslee, 68, has served as governor during most of Washington's time with legal weed. He's signed bills into law to allow medical marijuana patients to grow cannabis at home and, in January, announced an expedited process to expunge any marijuana-related crimes from 1998 through the present.

In his own words

"It's time for Congress to acknowledge that marijuana legalization is working in states like Washington, Colorado, and others and legalize marijuana as well." (Oct. 17, 2018)

NORML scorecard:

A

Amy Klobuchar

Current role: Member, U.S. Senate (3rd term)

Home state: Minnesota

Party: Democratic-Farmer-Labor

Marijuana voting record

Klobuchar, 58, has signed onto the STATES Act but is the only Democratic senator running for president who hasn't signed onto the Marijuana Justice Act. She has also signed onto the MEDS Act, which would streamline research possibilities for medical marijuana.

In her own words

"I support the legalization of marijuana and believe that states should have the right to determine the best approach to marijuana within their borders," Klobuchar told the Washington Post on Feb. 22.

NORML scorecard:

B

Beto O'Rourke

Most recent role: House of Representatives (three terms)

Home state: Texas

Party: Democratic

Marijuana voting record

O'Rourke, 46, was a co-sponsor of the SAFE Act, which protected banks doing business with the cannabis industry. He did not co-sponsor the Marijuana Justice Act introduced last year, when he had already begun campaigning for the U.S. Senate seat in Texas.

In his own words

"It’s time to end the war on drugs. That starts by ending the federal prohibition on marijuana." (Sept. 21, 2018)

NORML scorecard:

A+

Bernie Sanders

Current role: U.S. Senator (3rd term)

Home state: Vermont

Party: Independent (seeking Democratic nomination)

Marijuana voting record

Sanders signed onto the Marijuana Justice Act, as well as the SAFE Banking Act, which would protect banks who have cannabis industry clients. He has not signed onto the STATES Act.

In his own words

"We need to stop imprisoning people for smoking marijuana and start prosecuting the crooks on Wall Street whose greed and illegal behavior caused the greatest economic downturn since the Great Depression." (May 16, 2018)

NORML scorecard:

A+

Elizabeth Warren

Current role: Member, U.S. Senate (2nd term)

Home state: Massachusetts

Party: Democratic

Marijuana voting record

Warren, 69, is an original sponsor of the STATES Act. She has also signed onto the Marijuana Justice Act and CARERS Act, which protects medical marijuana patients, and the SAFE Banking Act, who protects banks that take on cannabis clients.

In her own words

"By outlawing marijuana, the federal government puts communities of color, small businesses, & public health & safety at risk. ... No one should go to jail for a joint. But more Americans are arrested for marijuana possession than all violent crimes combined. And black Americans are nearly 4x more likely to be arrested for it than whites." (June 7, 2018)

NORML scorecard:

A

Mike Davis; @byMikeDavis: 732-643-4223; mdavis@gannettnj.com