The State of Washington was considered a competitive swing state in 2000, and both campaigns sent advertisements into the state.[2][3] On election day, Gore won the state with a margin of 5.6%. Gore's best performance in the state was in King County, also the largest populated county, which he won with 60% of the vote. As of the 2020 presidential election[update], this is the last election in which Whatcom County voted for the Republican candidate.