"stop acting stupid" screams Jeb Bush along with Jack Kemp, William Bennett, et al.. during the 1990s following the 1994 election when ~60 percent of voters passed Prop 187, elected Republican Prop 187-backer Pete Wilson governor, and elected Republican Prop 187-backers as the majority in the Assembly for the first time (almost) ever.
The California Republican Party establishment rushed to stop acting stupid.
Since then I think there's been just two Republicans win statewide elections, one insurance commissioner and Schwarzenkennedy. The insurance commissioner was forced to resign mostly because a termed-out Democrat assemblywoman wanted that job. IIRC,