Rep. Andy Barr, who announced support from more than 100 members of Congress, is aiming to project strength in a rancorous GOP race to succeed Sen. Mitch McConnell.
Nida Allam launched her campaign against Rep. Valerie Foushee with endorsements from multiple groups, signaling a more organized effort to take on incumbent Democrats.
Lindell, a Trump backer who promoted debunked allegations about the 2020 elections and has been embroiled in defamation suits, joins a crowded Republican field.