The 1840 United States presidential election in Illinois took place between October 30 and December 2, 1840, as part of the 1840 United States presidential election. Voters chose five representatives, or electors to the Electoral College, who voted for President and Vice President.

1840 United States presidential election in Illinois

← 1836 October 30 – December 2, 1840 1844 →

Nominee Martin Van Buren William Henry Harrison Party Democratic Whig Home state New York Ohio Running mate Richard Mentor Johnson John Tyler Electoral vote 5 0 Popular vote 47,441 45,574 Percentage 50.92% 48.91%

County Results Van Buren   50-60%   60-70%   70-80%   80–90% Harrison   50-60%   60-70%   70-80%

President before election Martin Van Buren Democratic Elected President William Henry Harrison Whig

Illinois voted for the Democratic candidate, Martin Van Buren, over Whig candidate William Henry Harrison. Van Buren won Illinois by a margin of 2.01%.