If you want to be the Democratic presidential nominee in 2020, you’ll have to first respond to a new, decidedly 21st-century litmus test: What’s your plan for dealing with tech monopolies, specifically Facebook? The social platform and its innumerable instances of gross misconduct have become a bit of a talking point for some candidates, while others play catch-up. Sen. Elizabeth Warren (D-Mass.) went on the offensive early, detailing a plan in early March to break up Facebook, Amazon and Google. Other candidates, like Sen. Cory Booker (D-N.J.), aren’t so sure. Incidentally, Silicon Valley has given Booker piles of cash over the years. Here’s where many of the candidates stand: Elizabeth Warren Warren prompted much of this debate with her March 8 article explaining, in no uncertain terms, how and why it’s time to break up tech monopolies. She defines tech monopolies as companies with annual global revenue of $25 billion or more “that offer to the public an online marketplace, an exchange, or a platform for connecting third parties.” Warren believes WhatsApp and Instagram should be split off from Facebook and that the resulting competition between the three would force them to take user privacy more seriously. “We must give people more control over how their personal information is collected, shared, and sold ,” she wrote, “ and do it in a way that doesn’t lock in massive competitive advantages for the companies that already have a ton of our data.” Cory Booker

After Facebook co-founder Chris Hughes called for the social media company to be broken up, Sen. Cory Booker tells ABC News' @jonkarl that antitrust laws need to be enforced: “We’ve had a problem in America with corporate consolidation” https://t.co/PkZ2sPYax7pic.twitter.com/hDDqYwqQHd — This Week (@ThisWeekABC) May 12, 2019

“I don’t think that a president should be running around, pointing at companies and saying ‘break them up’ without any kind of process here,” Booker told ABC last weekend. “Do I think it is a massive problem in America, corporate consolidation? Absolutely. It’s about making sure that we have a system that works.” He continued: “It’s not me and my own personal opinion about going after folks. That sounds more like a Donald Trump thing to say: ‘I’m going to break up you guys, I’m gonna break’ — no.” Kamala Harris

Sen. Kamala Harris says "Facebook has experienced massive growth and has prioritized its growth over the best interests of its consumers … It is essentially a utility that has gone unregulated." #CNNSOTUpic.twitter.com/LADYpEaT7h — CNN Politics (@CNNPolitics) May 12, 2019

Facebook may reside in her home state, but that’s apparently not an issue for Sen. Kamala Harris (D-Calif.), who has compared Facebook to a utility that might need breaking up. “I think we have to seriously take a look at [breaking up Facebook], yes,” Harris told CNN’s Jake Tapper. “So we have to recognize it for what it is. It is essentially a utility that has gone unregulated.” Joe Biden In an interview Monday with The Associated Press, the former vice president said breaking up large tech companies is “something we should take a really hard look at.” Biden spoke approvingly of Warren for making “a very strong case” in favor of regulation but stopped short of making any firm commitment to that effect. Beto O’Rourke The Texas Democrat favors regulating Facebook over splitting it into a handful of separate companies, he told CNN’s Eric Bradner:

I asked @BetoORourke about breaking up big tech, which @ewarren has proposed. He said the U.S. should “regulate them more seriously, and perhaps to treat them a little bit more like a utility.” Here’s his full response (including an aside joking about lengthy user agreements): pic.twitter.com/kHWc9fu3H1 — Eric Bradner (@ericbradner) March 20, 2019

Pete Buttigieg South Bend, Indiana Mayor Pete Buttigieg has said he’s “potentially” in agreement with Warren’s plan, but he’s more concerned about Facebook’s conduct than size: “Again, to me, it’s about fairness and competition,” he told CNN in March. “So if they’re using dominance of one market to dominate another one, then that’s a problem. But the size itself isn’t the biggest problem, in my view.” “It’s not how big they are; it’s how they act. And that’s the thing I think we need to be regulating and targeting most.” Buttigieg also expressed sympathy for Facebook CEO Mark Zuckerberg, whom he cast as in a difficult position because Facebook’s “corporate policy decisions are now public policy decisions.” John Hickenlooper Former Colorado Gov. John Hickenlooper wants the Federal Trade Commission to look into the industry and encourage more enforcement of antitrust laws. He’s stopped short of explicitly calling for the breakup of Facebook and other companies, though his campaign told Reuters that proper enforcement of antitrust laws, with an emphasis on competition, could have that result. Bernie Sanders While Vermont Sen. Bernie Sandersmore often goes after Amazon for its tax avoidance and low pay for workers, he’s expressed support for breaking up “unchecked corporate power” across the board, including Facebook:

I applaud Facebook co-founder Chris Hughes for sounding the alarm on the dangers of unchecked corporate power. We are living in an era of monopolies that dominate every aspect of our lives—including our government. It’s time to take that power back. https://t.co/L3eEofZtnh — Bernie Sanders (@SenSanders) May 10, 2019

Amy Klobuchar Sen. Amy Klobuchar (D-Minn.) also stopped short of calling for a breakup for breakup’s sake and instead said we should “supercharge” antitrust enforcement. “My goal is to make antitrust cool again and make people realize that we are in— not just heading into — another Gilded Age of consolidation,” Klobuchar said in an address at the Center for American Progress, a liberal think tank, in March. “When you look at [rising] prices, lack of choices in certain areas, lack of innovation, no competition ... you just have companies relying on their own products. Why would they develop new products if they have a monopoly on the market?” “Antitrust has to become part of the political discussion. What’s really important over decades is what’s happening to consumers. We can’t just sit back and do nothing.” Tulsi Gabbard Rep. Tulsi Gabbard (D-Hawaii) is on the same page as Warren, likening tech monopolies to power-hungry groups incapable of self-regulating:

Absolute power corrupts absolutely. I agree with Senator Warren on the need to break up big tech companies like Facebook, Google, Amazon. Will be introducing similar legislation in U.S. House. https://t.co/OrdOqH0ZFB — Tulsi Gabbard (@TulsiGabbard) March 12, 2019