California voted for the Republican nominee, Vice PresidentGeorge H. W. Bush, over the Democratic nominee, Massachusetts governorMichael Dukakis by a margin of 3.57 percent. Bush won forty-four of the state’s fifty-eight counties, but the election was kept close by Dukakis’ strong performance in the Bay Area and his victory in Los Angeles, the state’s most populated county. Also, Dukakis won at least 31% of the vote in every county and at least 40 percent in forty of them. Much like Vermont in the same year, California was seen by observers as a swing state in this year's presidential election cycle due to fairly close polling.
To date, this is the last presidential election in which the state of California was carried by a Republican candidate. From the next election onwards, California would, like the other two states on the West Coast, vote consistently for Democratic candidates (Oregon and Washington even voted for Dukakis in 1988). Bush is also the last Republican to carry the following counties in a presidential election: Imperial, Monterey, Napa, Sacramento, San Benito and Santa Barbara, the last Republican to win any county in the Bay Area (Napa), and the last Republican to secure at least one-quarter of the vote in San Francisco.
Results
1988 United States presidential election in California[1]