WASHINGTON (AP) — Former Republican Rep. Liz Cheney said Wednesday that she would endorse Kamala Harris in the presidential election, ending weeks of speculation about the extent to which the member of a GOP dynasty turned Trump critic would embrace the Democratic ticket.

Cheney, who was co-chairman the House investigation in the January 6, 2021, attackbecame a fierce critic of Trump and was thrown out of her 2022 Republican primary in Wyoming as a result, made her announcement during an event at Duke University. In a video posted to the social media network X, she concluded with a remark about the “danger” she believes Trump still poses to the country.

“I don’t believe we have the luxury of writing down candidates’ names, particularly in swing states,” she said. “As a conservative, as someone who believes in and cares about the Constitution, I’ve thought deeply about this. Because of the danger that Donald Trump poses, not only will I not be voting for Donald Trump, I’m going to be voting for Kamala Harris.”

Harris’ campaign manager Jen O’Malley Dillon said in a statement Wednesday night: “The Vice President is proud to have earned Congresswoman Cheney’s vote. She is a patriot who loves this country and puts our democracy and our Constitution first.”

Former Vice President Dick Cheney’s daughter, Liz Cheney, has been perhaps Trump’s most prominent Republican critic. She joins fellow Republicans such as her former Jan. 6 committee member, former Rep. Adam Kinzinger and former Rep. Denver Riggleman, as Harris’ supporters. More than 200 alumni of the Bush administration and former Republican presidential campaigns of the late Sen. John McCain and Sen. Mitt Romney also announced their support for Harris last week.

When asked for comment, Trump campaign spokesman Steven Cheung replied: “Who is Liz Cheney and what does she do?”

Cheney was the Republican leader in the House of Representatives at the time of the January 6 attack, but broke with most of her caucus over Trump’s accountability. She lost her leadership position and was one of the few Republicans willing to serve on the January 6 committee, which was appointed by Democrats who controlled the House at the time.