the United States House of Representatives, Orange County is split between six congressional districts: , , , , , and . The 40th, 45th, 46th, and 47th districts are all centered in Orange County. The 38th has its population center in Los Angeles County, while the 49th is primarily San Diego County-based. 132, 154, 188 In the California State Senate, Orange County is split into 7 districts: , , , , , , and . In the California State Assembly, Orange County is split into 9 districts: , , , , , , , , and . According to the California Secretary of State, as of February 10, 2019, Orange County has 1,591,543 registered voters. Of these, 34% (541,711) are registered Republicans, and 33.3% (529,651) are registered Democrats. An additional 28.5% (453,343) declined to state a political party. Orange County has produced such notable Republicans as President Richard Nixon (born in Yorba Linda and lived in Fullerton and San Clemente), U.S. Senator John F. Seymour (previously mayor of Anaheim), and U.S. Senator Thomas Kuchel (of Anaheim). Former Congressman Christopher Cox (of Newport Beach), a White House counsel for President Reagan, is also a former chairman of the U.S. Securities and Exchange Commission. Orange County was also home to former Republican Congressman John G. Schmitz, a presidential candidate in 1972 from the ultra-conservative American Independent Party and the father of Mary Kay Letourneau. In 1996, Curt Pringle (later mayor of Anaheim) became the first Republican Speaker of the California State Assembly in decades. While the growth of the county's Hispanic and Asian populations in recent decades has significantly influenced Orange County's culture, its conservative reputation has remained largely intact. Partisan voter registration patterns of Hispanics, Asians and other ethnic minorities in the county have tended to reflect the surrounding demographics, with resultant Republican majorities in all but the central portion of the county. When Loretta Sanchez, a Blue Dog Democrat, defeated veteran Republican Bob Dornan in 1996, she was continuing a trend of Democratic representation of that district that had been interrupted by Dornan's 1984 upset of former Congressman Jerry Patterson. Until 1992, Sanchez herself was a moderate Republican, and she is viewed as somewhat more moderate than other Democrats from Southern California. In 2004, George W. Bush captured 60% of the county's vote, up from 56% in 2000 despite a higher Democratic popular vote statewide. Although Barbara Boxer won statewide