It should be over for Vermont U.S. Sen. Bernie Sanders. The clear trend is former Vice President Joe Biden is winning broadly.

Former Vice President Joe Biden swept another three primary wins on Tuesday, including a landslide in Florida. Five takeaways:

1. It’s basically over for Vermont U.S. Sen. Bernie Sanders. Biden topped the 1,100-delegate mark and extended his delegate lead to more than 300. Sanders is not mathematically eliminated, but to win the nomination he would have to capture 60%-plus of the delegates the rest of the way. That is pretty insurmountable. Why? Because ...

2. The clear trend is Biden is winning broadly. The former veep is winning African-Americans. He’s winning in the suburbs. He’s winning among blue-collar white voters. Even in college towns. In fact by continuing to lose so overwhelmingly ...

3. Sanders risks losing his leverage. "The Bern’s" claim to fame is that the Democratic establishment has to listen to him and his Bernie Bros revolutionaries because they represent a voter segment that the party and Biden needs in the fall. All true. But more lopsided losses — especially in college towns — will start eroding that claim and wane Sanders’ leverage to get Biden to agree to issues he and his base hold dear. Then there’s coronavirus ...

4. The viral outbreak also threatens Sanders’ good will. Forcing more primaries when he really has no path risks angering voters. The public will resent having to go the polls, and risk infection, only to ratify what has been stated: Biden is to be the nominee. Plus ...

5. The Democrats must be unified to beat President Trump. Look at Florida. Even with no opposition, and no reason for GOP voters to go to the polls,Trump still got more votes than Biden in Tuesday’ primary. Of course, the Democrats had four other candidates splitting the votes. Nonetheless the lesson is clear: Democrats must have party unity to beat Trump.