The California Democratic Party is the affiliate of the Democratic Party in the U.S. state of California. It is headquartered in Sacramento. With 43.5% of the state's registered voters as of 2018, the Democratic Party has the highest number of registrants of any political party in California. It is currently the dominant party in the state, and is one of the strongest affiliates of the national Democratic Party. The party currently controls the majority of California's U.S. House seats, both U.S. Senate seats, the governorship, and has supermajorities in both houses of the state legislature.