Rep. Chip Roy (R-TX) announced his run on Thursday to replace Texas Attorney General Ken Paxton, who is running for the Senate next year. Reports surfaced earlier this month that Roy was considering a bid for the statewide office.

Austin, announced a run for Texas attorney general Thursday, joining a crowded Republican primary field vying to replace Ken Paxton. A conservative but often rebellious member of Congress, Roy served as Paxton’s top deputy for two years before becoming an outspoken critic of his former boss.