The United States presidential election of 1904 held on November 8, 1904, resulted in the election to a full term for President Theodore Roosevelt. Roosevelt had succeeded to the presidency upon the assassination of William McKinley. The Republican Party unanimously nominated him for president at their 1904 national convention. During the election campaign, Roosevelt called on the voters to support his "square deal" policies. The nominee of the Democratic Party was Alton B. Parker, Chief Judge of the New York Court of Appeals, who appealed for an end to what he called "rule of individual caprice" and "usurpation of authority" by the president.
Theodore Roosevelt easily won the election, thus becoming the first president to assume the office upon the death of a president to secure a full term of his own.