After hearing from my colleagues, I have decided to run for Speaker of the House. Let’s work together to make a difference for our country.— Kevin McCarthy (@GOPLeader) September 28, 2015
I am running for Speaker to work with my colleagues and make the case to the American people for conservative principles.— Kevin McCarthy (@GOPLeader) September 28, 2015
Boehner announced his resignation on Friday under pressure from conservatives.
McCarthy, who is Boehner's No. 2, sent a letter to GOP lawmakers on Monday pledging to fight for conservative principles - and asking for their support as the next speaker.
The California Republican is strongly favored to get the job though he faces a challenge from Florida Republican Rep. Daniel Webster.
McCarthy is serving his fifth term in Congress and has been endorsed by Boehner.