 Republican congressmen have won every contest and averaged 67% of the vote.Republican presidential candidates have averaged 55% of the vote, and the last Democratic presidential nominee to carry Orange County was Harry S. Truman in 1948.Republican senatorial candidates typically garnered 56% of the county vote until the electorate swung in favor of Democratic candidates in 2008 and 2012 with an average of 57% of the vote, then back to Republican candidates in 2014 with 60% of the vote.