Over the last 100 years, Allen County has been a Republican stronghold in presidential elections. The Democratic national landslides of Franklin D. Roosevelt in 1932 & 1936 as well as Lyndon B. Johnson in 1964 constitute the only occasions since then that a Republican presidential candidate failed to carry the county. As of 2020, Joe Biden was the highest vote earner for a Democratic candidate in the history of the county with 73,189 votes. Donald Trump achieved the same feat for his party, with 92,083 votes.