Cheney told CNN Special Correspondent Jamie Gangel that he has always supported the GOP nominee and will do so this year as well.

The announcement makes Cheney one of the few Republican Party elders to announce their support of Trump and comes a day after House Speaker Paul Ryan told CNN he is "just not ready" to back Trump.

Former President George W. Bush, who Cheney served, said this week he would skip this summer's Republican convention where Trump will be formally nominated. Former President George H.W. Bush and John McCain and Mitt Romney, the GOP's 2008 and 2012 nominees, also don't plan to attend the convention.

Sen. Lindsey Graham, meanwhile, said Friday he would sit this election out because he can't bring himself to vote for either Trump or Hillary Clinton.