Orange County, more populous than 21 states, was until recently one area of California where Republicans thrived. But in 2016 it voted for the Democratic presidential candidate for the first time in 80 years. All four of the state’s Republican representatives won reelection by smaller margins than they had in 2014. Does the age of Trump herald the end of any Republican presence in the southern part of the nation’s most populous state? More than a third of the county’s residents are Hispanic, which probably helps explain why Trump did so poorly there. Orange County is also ground zero in the Democratic effort to retake control of Congress in 2018. Democrats are targeting all four Orange County congressional seats for takeover, a task recently made easier by the announced retirement of two of the Republican congressmen.