If current voting and registration trends persist in Orange County, the longtime Republican stronghold will support its first Democrat for president since Franklin D. Roosevelt. A victory for Hillary Clinton here will signal that the turning point is near: Democrats soon will be the biggest party in Orange County.
Orange County once had California’s highest percentage of voters registered Republican. As late as 1990, the O.C. GOP held a 22% registration advantage over Democrats. By May 2015, that figure had dropped to 9%.