LOS ANGELES (AP) — California's Republican Party convention will be an early test for Donald Trump, Ted Cruz and John Kasich in a state whose June election could hold the decisive delegates in the fight for the party's presidential nomination. Trump, who has seized front-runner status as a political outsider, will be speaking Friday outside San Francisco to hundreds of longtime GOP insiders — the activists, grassroots organizers and elected officials who make up the core of the state party. The billionaire businessman known for his boisterous public rallies rarely speaks to Republican establishment groups, and has railed against what he calls a rigged party system that governs the nomination. There have been pushes toward moderation, but the group tends toward conservative leanings and favors calls for a strong national defense, free markets, tax cuts and shrinking the size of government. The contest in the nation's most populous state — Los Angeles County alone has more people than Michigan — is vastly complicated, playing out in what amounts to 54 separate races on a single day — one in every congressional district and one statewide. The winner in each district collects three delegates; then, the candidate who gets the largest number of votes statewide claims a bonus of 10 more, plus the state party chairman and Republican National Committee members for a total bonus of 13.