The race to be Kamala Harris’ running mate has already started.

Moments after President Joe Biden dropped out of the presidential contest and endorsed his vice president on Sunday, speculation began swirling over who would be Kamala Harris’ running mate. Some Democrats started floating their preferred picks. Pennsylvania Gov. Josh Shapiro, for instance, “would be an excellent choice” to share the ticket, said Philadelphia Democratic Party chair and former Rep. Bob Brady.

Vice President Kamala Harris is now the most likely replacement for President Joe Biden after he dropped out of the 2024 race Sunday and endorsed her as the Democratic nominee—triggering a rushed competition among the Democratic Party’s rising stars to become her running mate.

Names commonly floated as replacements for Biden at the top of the ticket, mostly governors who served as surrogates for the Biden-Harris campaign and who have high approval ratings in their home states, would appear most likely to be top contenders for her running mate.

After President Joe Biden announced that he would suspend his reelection campaign, his endorsement of Vice President Kamala Harris to succeed him has propelled her to being the most likely Democratic nominee. Now, the question is who her running mate will be.

Four prominent Democrats would perform significantly better than President Biden in key swing states if they replaced him as the party’s presumptive nominee, according to a memo from a Democratic-funded polling group.

The BlueLabs draft memo, first acquired by Politico, found that “nearly every tested Democrat performs better than the President” in the swing states of Wisconsin, Michigan, Nevada, Arizona, Georgia, North Carolina and Pennsylvania.

John F. Kelly, the longest-serving chief of staff in President Donald Trump’s White House, watches Trump dominate the GOP primary with increasing despair.

“What’s going on in the country that a single person thinks this guy would still be a good president when he’s said the things he’s said and done the things he’s done?” Kelly said in a recent interview. “It’s beyond my comprehension he has the support he has.”

Kelly, a retired four-star general, said he didn’t know what to do — or what he could do — to help people see it his way.

Sen. Mark Kelly (D-AZ) said during an interview with the Washington Post that members of his party are “not even close” to understanding the problems on the U.S. southern border.

“Absolutely not. Not even close,” the incumbent senator said when asked if members of his party understood “the complexity of the issue and the frustrations that people have.”

Arizona Republican Senate candidate Blake Masters refused to concede his race against Democrat incumbent Sen. Mark Kelly Saturday, hours after news outlets called the election in Kelly’s favor — and vowed to fight on until “every legal vote is counted.”

“For my people who knocked doors in 115-degree heat, and for the million+ Arizonans who put their faith in me, we are going to make sure that every legal vote is counted,” Masters wrote in a statement posted to Twitter.

Democratic Sen. Mark Kelly won his bid for reelection Friday in the crucial swing state of Arizona, defeating Republican venture capitalist Blake Masters to put his party one victory away from clinching control of the chamber for the next two years of Joe Biden’s presidency.

With Vice President Kamala Harris’ tiebreaking vote, Democrats can retain control of the Senate by winning either the Nevada race, which remains too early to call, or next month’s runoff in Georgia. Republicans now must win both those races to take the majority.