A number of Democrats running for president are turning to beer to appeal to voters, hoping to boost their populist credentials and stand out in a large field of more than 20 candidates.

Candidates such as Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.) have livestreamed themselves on Instagram having a beer, and former Colorado Gov. John Hickenlooper John HickenlooperThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cook Political Report shifts Colorado Senate race toward Democrat Willie Nelson playing at virtual fundraiser for Hickenlooper MORE regularly refers to his past work as a brewer.

“Hold on a sec, I’m gonna get me a beer,” Warren announced in a New Year's Instagram story, before taking a hearty swig on camera.

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Hickenlooper, who co-founded Denver’s Wynkoop Brewing, touted his work in a fundraising email shortly before the first 2020 Democratic debates.

"I'll be the first geologist and brewer on the presidential debate stage,” Hickenlooper wrote.

Beer and politics have long gone together, according to experts, and the question "would you have beer with that candidate?" is seen as an important test of likability.

Former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE, who does not drink, made a point to buy a round of beers during a stop at New York City's Stonewall Inn for Pride Month. And Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) played beer pong at Liquid Therapy in New Hampshire.

Candidates have also held a host of fundraisers and campaign stops at breweries and bars in early primary states.

“If a symbol in America is sitting down to have a beer or going to a tavern to relax, this [shows] this is a politician that is comfortable in their own skin, they have the common touch, they like to do what we the voters like to do,” Mordecai Lee, a political scientist at the University of Wisconsin-Milwaukee, told The Hill.

The candidates are trying to tap into a popular consumer trend that represents a huge number of potential voters.

Americans spent $114.2 billion on beer last year, and according to Gallup it is the most popular alcoholic beverage in the U.S. And the attention is one the industry welcomes.

“Beer is as American as apple pie,” said Jim McGreevy, president and CEO at the Beer Institute. “American politicians have effectively used beer in campaigns starting with our first president, George Washington. We celebrate National Beer Day on April 7, because Franklin Roosevelt fulfilled his campaign promise of ending prohibition on beer before other alcohol.”

"Beer is not only America’s most popular alcohol beverage, it brings people together and lends itself to occasions where politicians can have meaningful conversations with voters," he added.

Beer is also bipartisan, said Katie Marisic, federal affairs manager at the Brewers Association.

“There are 7,000 small and independent breweries across the states ... these breweries are deeply involved in their communities,” she told The Hill. “They act as a gathering place for locals and there’s a lot of tourism being driven by breweries as well ... it’s something you can get behind no matter your party.”

Politicians have been using beer to connect with voters or conduct political business for years, perhaps most notably in 2009, when former President Obama hosted an informal "beer summit" with Harvard Professor Henry Louis Gates and a Cambridge, Mass., police officer after a racial controversy.

Obama was also the first president to brew beer in the White House. Former presidents such as George Washington brewed their own beer at home, in his case, Mount Vernon.

Mixing hops and politics can sometimes backfire.

Democrats baptized the 2020 primary with beer when Democratic National Committee Chairman Tom Perez Thomas Edward PerezClinton’s top five vice presidential picks Government social programs: Triumph of hope over evidence Labor’s 'wasteful spending and mismanagement” at Workers’ Comp MORE clinked a glass over the committee’s contract to host the Democratic National Convention in Milwaukee and spilled some on the paperwork.

"I think it's only appropriate that the paperwork should have a little spill of beer on it,” Perez joked.

And critics pounced on Warren after her beer Instagram, questioning her authenticity.

“She would have my vote if she shotgunned it,” Fox News host Greg Gutfeld said, mocking Warren. "She has a problem not being herself. It’s just obvious that she’s inauthentic in everything she does.”

Another female candidate faced similar criticism in the 2016 primaries. Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE tried her hand at pouring a beer during a visit to a brewery in Wisconsin, only to produce an overly foamy pour. That same brewery, Pearl Street in La Crosse, this month invited the current presidential candidates to visit and try to top Clinton’s pour.

And beer drinkers aren't always able to sway voters. In the 2004 election, Democratic nominee John Kerry John Forbes KerryThe Memo: Warning signs flash for Trump on debates Divided country, divided church TV ads favored Biden 2-1 in past month MORE often grabbed a beer before the cameras. Yet a poll showed more voters saw then-President George W. Bush, his opponent who had stopped drinking alcohol, as a "regular guy."

Openly enjoying a beer could also be tricky for candidates, Lee said.

He cautioned that beyond questions of authenticity, some voters expect politicians to be "role models," who shun or are careful to moderate their alcohol consumption.

“There’s no doubt if you’re a candidate you’re living in fear, essentially of anything that might lead to negative publicity," Lee told The Hill. “This [drinking publicly] is high-risk behavior. I suppose when you’re one of 23 candidates you’re willing to engage in a little bit of risk, in the hopes there’ll be a political payoff."

Candidates are often cautious about even revealing their beer preferences, hoping to avoid potentially divisive choices.

The Hill surveyed every Democratic candidate for president asking about their preferences but only heard back from a handful: Rep. Tim Ryan Timothy (Tim) RyanNow's the time to make 'Social Emotional Learning' a national priority Mourners gather outside Supreme Court after passing of Ruth Bader Ginsburg Lincoln Project hits Trump for criticizing Goodyear, 'an American company' MORE (D-Ohio), who likes Miller Lite; Rep. Seth Moulton Seth MoultonOvernight Defense: Nearly 500 former national security officials formally back Biden | 40 groups call on House panel to investigate Pentagon's use of coronavirus funds The Hill's Morning Report - Presented by Facebook - Markey defeats Kennedy; Trump lauds America's enforcers in Wisconsin Moulton fends off primary challenges in Massachusetts MORE (D-Mass.), who prefers Shiner Bock; and Montana Gov. Steve Bullock Steve BullockMcConnell locks down key GOP votes in Supreme Court fight Senate Democrats demand White House fire controversial head of public lands agency Pence seeks to boost Daines in critical Montana Senate race MORE who likes a craft beer from his home state, Blackfoot River Brewing Company’s Blackfoot IPA.

Sen. Cory Booker Cory Anthony Booker3 reasons why Biden is misreading the politics of court packing Bipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility MORE (D-N.J.), like Biden and President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, doesn’t drink. Warren revealed her preference for Michelob Ultra on Instagram. And a spokesman for Gillibrand told NPR in June that the candidate "tends to enjoy the grapefruit-flavored beers."

Consumer experts have long collected data to draw links between the products people prefer and their political leanings.

A 2013 National Media Research Planning and Placement analysis of consumer data suggested that microbrew-drinkers tended to lean Democratic in their voting habits. According to the Brewers Association, the number of small craft breweries in the U.S. has doubled since 2013.

Beer industry players, though, tout beer as a unifying force, playing up its cultural importance ahead of an election year and downplaying any partisan rifts.

“When it comes to beer there’s no red states and no blue states; there are only beer states,” according to the Brewers Association.

And they emphasized the importance of politics to small business owners like microbrewers. At least two candidates have a craft beer named after them: Vermont's Zero Gravity Brewing named Bernie Weisse after Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I-Vt.) and New Hampshire's To Share Brewing Company named Kirstenweizen after Gillibrand.

Marisic, from the association, suggested that people who are heavily involved in their communities — for example craft brewers — are also more likely to be politically aware.

"The people who create beer are excited about it and passionate about it and not all of them are coming from the same background or same walks of life," said Marisic. "The fact that it is such a community oriented thing means it’s a good place to go and interact with people that you might not otherwise.”

The 2013 analysis of consumer data offers a note of caution, though, in finding that beer drinkers are less likely than wine drinkers to vote.

Still, beer is certain to keep popping up on the campaign trail.

Asked about his favorite beer, Washington Gov. Jay Inslee Jay Robert InsleeBarr asked prosecutors to explore charging Seattle mayor over protest zone: report Bottom line Oregon senator says Trump's blame on 'forest management' for wildfires is 'just a big and devastating lie' MORE, another 2020 Democratic contender, pointed The Hill back to a comment he made to reporters several years ago.

“All beer is the beautiful amber nectar of the gods," Inslee said.