… The Democratic capture of four Republican-held congressional seats in Orange County in November — more than half the seven congressional seats Democrats won from Republicans in California — toppled what had long been a fortress of conservative Republicanism. The sweep stunned party leaders, among them Paul D. Ryan, the outgoing House speaker. Even Gavin Newsom, the Democratic governor-elect of California, won the county where Richard M. Nixon was born.
But the results reflected what has been a nearly 40-year rise in the number of immigrants, nonwhite residents and college graduates that has transformed this iconic American suburb into a Democratic outpost, highlighted in a Times analysis of demographic data going back to 1980, the year Ronald Reagan was elected president. CONT.
Adam Nagourney & Robert Gebeloff, New York Times