What happens to JD Vance's Senate seat if Trump chooses him as veep and wins re-election?

If former President Trump selects Republican Ohio Sen. JD Vance as his running mate, Ohio Gov. DeWine would choose Vance's Senate replacement.

"I care a lot about national defense, I care a lot about whether the troops have what they need to fight," Vance said on Fox News last week in a conversation related to him potentially serving as vice president. "I care a lot about, frankly, whether when we ask our kids to go to war, we ought to make sure it's for the right reasons. And so you definitely think about those things, maybe a little bit differently, as a U.S. Marine." 

Vance could also be a powerful weapon against the Biden campaign, with Vice President Kamala Harris’ former communications director Ashley Etienne calling him the "greatest threat" in a vice presidential debate.