Tonight's Florida debate details

Hillary Clinton and Bernie Sanders will meet for their fourth one-on-one debate Wednesday evening in Miami — one night after Sanders won an upset victory in Michigan, reshaping their party’s presidential race as Clinton seemed close to clinching it. 

The debate is sponsored by The Washington Post and the Spanish-language network Univision. It will begin at 9 p.m. Eastern. 

Viewers can watch the debate live on The Post’s website or via The Washington Post app for Apple TV. It will also be shown on CNN. Spanish-speaking viewers can watch it on Univision. 

This debate comes at an unexpected moment of drama in the Democratic race.
Clinton is still the clear leader, in terms of states won and delegates accumulated. She added to her delegate lead Tuesday by winning a lopsided victory in Mississippi and dividing Michigan’s delegates nearly evenly with Sanders. 

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In the debate, moderators will probably ask about immigration policy, a vital subject in Florida — and a subject on which Clinton and Sanders differ significantly from the GOP candidates. 

Both Democrats have said they support a legal pathway to citizenship for undocumented immigrants who are already in the United States. And both have said they would preserve President Obama’s executive actions, which are intended to stop the deportations of undocumented immigrants who were brought here as children and of undocumented parents whose children are U.S. citizens or legal residents. 

Sanders — whose father was an immigrant from Poland — would go even further than that. He says he would issue an expanded order that would protect from deportation all undocumented residents who have lived in the country for at least five years.

Besides contrasting their views on immigration with each other's -- and Donald Drumps's -- expect these things to also play out.

FLINT FACT CHECK: At the Flint debate on Sunday, Clinton appeared to catch Sanders off guard when she accused him of not supporting the auto bailout -- an attack that Sanders the following day said was "categorically untrue." Both candidates have since doubled down on their attacks and released ads on the issue. Tonight they could likely take it up again in person. 

TESTY EXCHANGES: Clinton and Sanders tend to remain cordial, but at the debate on Sunday, things got contentious. Sanders told Clinton, "excuse me, I'm talking," which Clinton's campaign aides described as "disrespectful" and "rude." Sanders responded by saying he thought Clinton was the one being "rude” since she was the one interrupting. Either way, as they share a stage tonight, keep an eye out for who tries to override who. 

PRAISE FOR SANDERS: Despite what could be some heated back-and-forths between the two candidates, Clinton has tried to pivot her rhetoric and attention to the general election -- part of which may include getting Sanders (and his supporters) on her side. In recent days, she's had some kinder words for her opponent: She’s called him an "ally" and said she "would hope to enlist" him to help should she be the nominee. Thus tonight, don't be surprised if Clinton finds moments to praise him as opposed to just knocking him down. That said, Sanders told ABC News' David Wright that that language was premature. After last night's stunning upset, will Clinton have to change her tune again? 

A BREAK-OUT MOMENT: [...] The pressure is still on Sanders. Yes, he scored a major upset in a large, diverse state, but Clinton won one too and actually expanded her delegate lead with her overwhelming victory in Mississippi on Tuesday night. Though the Vermont senator has said he is confident in his path forward, realistically he needs to find a way to translate his Michigan win into more solid victories in that region and beyond in order to tighten that delegate gap. His performance tonight could be his chance.

Follow the Twitter machine at the top right for my takes or at the hashtag #DemDebate.