On May 10, 2016, in the presidential primaries, West Virginia voters expressed their preferences for the Democratic, Republican, Green, and Libertarian parties' respective nominees for president. Registered members of each party only voted in their party's primary, while voters who were unaffiliated chose any one primary in which to vote.
Donald Trump won West Virginia with 68.5% of the vote, his second largest share of the vote in any state. Hillary Clinton received just over a quarter of the vote, with 26.4%. Trump's performance in the state made it his strongest state in the 2016 election by total vote share.[2]
West Virginia was also one of two states where Donald Trump won every county, the other being Oklahoma. This was the second consecutive presidential election where every county within the state voted Republican. Trump's 42.1% margin of victory is the largest of any presidential candidate from either party in the state's history, besting Abraham Lincoln's 36.4% margin of victory in 1864. Hillary Clinton's performance was the worst by a major party nominee since 1912, when three candidates split the vote and received over 20% of the vote each, and, as of the 2024 election, remains the worst performance ever by a Democrat in West Virginia. Clinton won less votes in the general election than were cast in her party's primary overall, as well as less than the votes she received in the 2008 state primary.