Arizona Senator Jeff Flake says it’s “a possibility” that he will vote for #NeverTrump candidate Evan McMullin over his own party’s presidential nominee.

“That’s a possibility,” Flake told ABC, which noted that Arizona voters can write his name in on their ballot.

Flake bemoaned the fact that as a result of his efforts to undermine Donald Trump, his own “popularity has dropped at home because of it, and that he’s relieved he’s not up for re-election until 2018,” ABC reports.

“I won’t lie, it’s not been easy,” [Flake] said, going on to paraphrase a John McCain joke that Congress’ popularity is down to paid staffers and blood relatives. “I always thought I was fine having 10 siblings and 69 first cousins on my father’s side. I’m not sure that blood relatives, they hold anymore,” he joked.

As Breitbart News has previously reported, Flake has already earned a primary challenge in 2018 because of his efforts to undermine his party’s nominee. Throughout the election, Flake has made clear that his opposition to Trump stems, in large part, from Flake’s opposition to Trump’s plans to secure the southern border, enforce U.S. immigration laws, curb Islamic migration, and enact trade deals that put the needs of the American worker first.

Indeed, on some of the most significant policy issues facing the nation today, Flake sides with Clinton over Trump and the American electorate. Most notably, both Flake and Clinton are proponents of the open borders trade and immigration policies supported by globalist corporate donors. Both Clinton and Flake have been vocal advocates of the Rubio-Schumer amnesty bill, as well as the Trans Pacific Partnership–although Clinton has since rhetorically distanced herself from her prior enthusiastic support for the 12-nation trade pact.