Garrick, of Solana Beach, would replace Sam Blakeslee of San Luis Obispo, who will be forced out of the Legislature by term limits.
Assemblywoman Connie Conway of Tulare, a rival for the leadership post, is expected to be a top lieutenant for Garrick as caucus chairwoman.
Assemblyman Ted Gaines, R-Roseville, confirmed off-the-record comments by other legislators this morning that Garrick had secured majority support of the 28-member GOP caucus to succeed Blakeslee.
"I worked very hard to get Martin a victory," Gaines said. "I'm pretty confident the votes are there, and that Martin will be our leader and Connie will be our caucus chair."
PHOTO: Garrick's Facebook page.