A rival backed by Donald Trump defeated Wyoming Rep. Liz Cheney in a GOP primary Tuesday, strengthening Trump's grip on the party's base.

Harriet Hageman and her allies entered the day downbeat about her prospects, aware that Trump's support lifted her campaign considerably in the state where he won the most votes. 

During Cheney's tenure on Capitol Hill, she was already looking ahead to a possible presidential run in 2024.

During an address to a small gathering of supporters flanked by mountains and bales of hay, Cheney described her loss as the beginning of a new chapter in her political career.

"Our work is far from over," she said Tuesday evening, referencing Abraham Lincoln, who also lost congressional elections before becoming president.

The GOP shifted rightward. As a result of Trump's populist appeal, as well as his denial of defeat, her father's party is now dominated by him.

It has been widely reported that Trump's attorney general and judges he appointed have rejected such lies. 

Cheney, once an occasional critic of the former president, has now emerged as the GOP's loudest voice warning that he threatens democracy. 

Her panel is investigating the Jan. 6, 2021, insurrection at the Capitol by Trump supporters, which she referenced in nodding to her political future.

I have said since Jan. 6 that I would do whatever it takes to keep Donald Trump out of the Oval Office.

In Cheyenne, hundreds of miles east of Cheney's concession speech, Hageman supporters gathered for an outdoor rodeo and Western culture festival.

In the run-up to the 2020 election, she made false claims that the election was rigged in accordance with Trump's conspiracy theories.