Democratic Sen. Joe Manchin of West Virginia didn’t flinch when asked whether he would cross party lines to back his Republican colleague and friend in Alaska’s Senate race.

Manchin revealed in a joint interview with Republican Sen. Lisa Murkowski that he would endorse her for reelection in 2022 “in a heartbeat.” Murkowski, one of seven GOP senators who voted to convict former President Donald Trump in his Senate impeachment trial earlier this year, faces primary competition and the ire of Trump in her bid for a fourth term in the upper chamber.