James Baird Weaver (June 12, 1833 – February 6, 1912) was a member of the United States House of Representatives and two-time candidate for President of the United States. Born in Ohio, he moved to Iowa as a boy when his family claimed a homestead on the frontier. He became politically active as a young man and was an advocate for farmers and laborers. He joined and quit several political parties in the furtherance of the progressive causes in which he believed. After serving in the Union Army in the American Civil War, Weaver returned to Iowa and worked for the election of Republican candidates. After several unsuccessful attempts at Republican nominations to various offices, and growing dissatisfied with the conservative wing of the party, in 1877 Weaver switched to the Greenback Party, which supported increasing the money supply and regulating big business. As a Greenbacker with Democratic support, Weaver won election to the House in 1878.