Majority Leader Kevin McCarthy of Bakersfield announces his candidacy for House Speaker

House Majority Leader Kevin McCarthy of Calif. (J. Scott Applewhite)

House Majority Leader Kevin McCarthy is officially declaring his candidacy for House speaker to replace John Boehner.

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.