Rep. Chip Roy announced a bid for Texas attorney general on Thursday, seeking to replace Ken Paxton in an already crowded Republican primary field. Roy, a Freedom Caucus member, has an antagonistic history with most of his party’s leaders, including House Speaker Mike Johnson and President Donald Trump.

It will be the first test of whether Roy’s at times frosty relationship with President Trump — and his turn against Paxton — can withstand scrutiny in a statewide primary.