In the early post-Civil War era, Kent County, having been heavily Confederate-leaning, tended towards the Democratic Party. William McKinley was the only Republican to carry the county between 1876 and 1924. After that, although carried by Franklin Roosevelt and Harry Truman during the five consecutive Democratic victories between 1932 and 1948, the county trended Republican especially relative to national voting. Currently, Kent County is along with Somerset County further south the most politically competitive county on Maryland's Eastern Shore. In 2004, Republican George W. Bush won it with 52.8% of the vote to Democrat John Kerry’s 46.1%. In the 2008 United States Presidential Election, Barack Obama won Kent County by 48 votes more than John McCain. In 2012, Republican Mitt Romney won Kent County by 28 votes over Democrat Barack Obama. In 2016, Republican Donald Trump won Kent County with 48.7% of the vote to Democrat Hillary Clinton's 45.7%, and a 20-year record high of 5.7% of the vote for third-party candidates. In 2020, Joe Biden flipped the county, winning it by 134 votes.