Andrew Gillum - who came very close to winning the governor's face in Florida but (unfortunately) lost to Republican Ron DeSantis
https://www.thedailybeast.com/elizabeth-warren-has-been-talking-to-andrew-gillum-sparking-vice-president-buzz
Presidential candidates often keep a running list of influential individuals who they will informally call for ideas, advice, and, perhaps, to scope them out as a potential running mate.
And for several candidates, including at least one in the top tier, former Tallahassee Mayor Andrew Gillum is on speed dial. Sen. Elizabeth Warren (D-MA), in particular, has been in contact with Gillum over the past several months, multiple knowledgeable sources told The Daily Beast.
When reached for comment about the vice presidential buzz, a Warren campaign official said, “that is baseless and not at all true.”
But two sources said the talks between Warren and Gillum resemble the kind of courtship that happens when a leading presidential candidate is exploring potential vice presidential contenders. One source briefed on the communications said the two Democrats have been in contact over the course of the campaign and that it is the “strong impression” that Gillum is a possible vice presidential contender for Warren, who has risen in recent months to become a frontrunner in the 2020 primary, the source said.
“If you’re trying to win Florida, I would be courting Andrew and that’s what’s happening,” a second source familiar with the conversations said.
I live in Florida and still have my Andrew Gillum yard sign in my garage - not sure he is who I'd pick for Warren, that said. For one, he lost Florida - though he came VERY close to winning. For another, even though I dont think it's serious, he has been the subject of an FBI investigation and I just don't think that look great.
On the other hand: he could really excite black voters, and he puts Florida in play. And he's a great campaigner. He really knocked my socks off when he was running for governor here. He had so much energy, he got people so enthusiastic - he really seemed like he could win. (But he didn't. So.)