Both Allen and Cox mostly played along, taking a few opaque swipes at their opponent (Allen noted that he was the only gubernatorial candidate who voted for President Trump; Cox argued that the party needs someone with "maturity," an apparent reference to their nearly two decade age difference).
But all weekend, the differences between the men seemed more about style that substance. They focused their messages on Republican red meat issues: Attacking California Democrats, bemoaning the state's business climate, attacking the sanctuary state law and vowing to repeal the gas tax increase.
"Our state’s been mismanaged and not only has it been mismanaged, it has been run into the ground," Allen told delegates Saturday. "Jerry Brown and the California Democrats have taken the state that once had the best roads, the best schools, the best water system, and now we lead the nation in poverty ... I will tell you, ladies and gentleman, this is our state, it's about time that we take it back. Are you with me?"
Cox, who acknowledged that he's still being introduced to many voters, hammered the same theme in his speech a few minutes later.
"Why am I a conservative?" he asked. "Because like you, I believe in people, not government. I believe that conservative solutions solve problems, not big government. Big government is not the solution to our problem, big government is the problem."
The party did throw its support Sunday behind a lawsuit by President Trump's administration, challenging the state's so-called sanctuary law.
The sanctuary policy, passed last year by Democrats and signed by Gov. Jerry Brown, is one of the most high profile flashpoints in the ongoing clash between California Democrats and the president. It limits local police and sheriff's ability to cooperate with federal Immigration and Customs Enforcement, instructing local law enforcement to only hand over people in their custody to ICE if the suspected undocumented immigrant has a history of violent crime.
Attacking the sanctuary law was among the most popular refrains at this weekend's GOP convention.
Also Sunday, the party voted to endorse Steven Bailey for attorney general, Cole Harris for lieutenant governor and Mark Meuser for secretary of state.