Ever since President Joe Biden ended his re-election bid and anointed Vice President Kamala Harris, there has been considerable speculation over who Harris will pick as her running mate to take on former President Donald Trump’s pick: Sen. J.D. Vance.

Hours before Biden dropped out of the race, Vance (R-OH) took to X to call on the 81-year-old commander-in-chief to resign on the basis that he is not fit to govern the nation in his condition, as previously reported by The Dallas Express.

Following Biden’s not-so-shocking announcement on Sunday, other Republicans called on the president to resign, making similar points to Vance.

While many Democratic officials have endorsed Harris, likely seeking a spot on the ticket as her running mate, Vance has expressed that he doesn’t think it matters who she picks.

Here’s some of what Breitbart reported regarding what Vance thinks about a potential challenger:

Sen. JD Vance (R-OH), the GOP nominee for vice president, told Breitbart News exclusively on Monday that he and former President Donald Trump are ready for all comers.

Vance, in his first print interview since Trump selected him as his running mate last week at the Republican National Convention, said he and Trump are ready for anyone Democrats put forward.

While it’s not final or official yet, since Democrat President Joe Biden formally dropped out of the race on Sunday afternoon, it looks as though Vice President Kamala Harris might end up locking down the Democratic nomination. She’s raised tens of millions of dollars and won the endorsements of a vast majority of her party’s elected leaders including Biden himself. Some big names like former President Barack Obama have yet to endorse, but Harris seems well on her way to becoming the Democrat nominee.

“As President Trump has pointed out, Kamala Harris owns all of the bad policies of the Biden administration and so does any other plausible Democrat, so I really see this as we’re running against the entire Democratic Party apparatus,” Vance said in a phone interview on Monday before a huge rally in Ohio.