Dick Cheney issued a statement Friday evening in which he portrayed Donald Trump as an existential threat to the stability of the country.

Rollins’ camp said he has agreed to appear at three debates — KTLA, KESQ, and NPR LA — while Calvert has yet to respond. The two are competing for a battleground seat in Palm Springs and Riverside County, one of the most closely-watched swing districts in the country. Calvert’s campaign didn’t respond to a request for comment on Monday.

Liz Cheney, a former Republican congresswoman who became one of former President Donald Trump’s harshest critics, has formally endorsed Vice President Kamala Harris for president. The endorsement is the latest move by Cheney to oppose Trump and adds to a growing list of Republican defections away from Trump in this election.