Orange County’s reputation as a GOP stronghold dates to the days when it had the highest percentage of registered Republicans in the state and was among the best-known red counties in the nation.

But local Democrats note that demographics ... neighboring San Diego County, where the registration edge flipped from blue to red and back to blue again 11 years ago, Orange County was a ...

Because of its deep Republican roots, Orange County is the most prominent red county ... county voted blue Tuesday night because it is home to a large concentration of the two demographics that ...

In February, all three groups had about the same population: Between 520,000 and 540,000. The blue line overtook the red one this week. The significance of this change in Orange County in ...

That's in part due to the region's fast-changing demographics. Once a rock-ribbed Republican stronghold, Orange County went blue in the last presidential election for the first time since 1936.