What will it mean for Trump – and Biden – if Liz Cheney runs in 2024?

Trump Republican adversary could make a symbolic impact in the moderate' party lane - but she could also take votes from Biden

When Liz Cheney left the podium at a Wyoming ranch on Tuesday night, clapped and cheered by supporters, a Tom Petty song boomed out beneath the Teton mountains: Well, I won't back down / No, I won't back down / You could stand me up at the gates of hell / But I won't back down."

The woman who has emerged as Donald Trump's most implacable Republican adversary had suffered a landslide defeat in a primary election to decide Wyoming's only seat in the US House of Representatives.