1916 United States presidential election in Iowa
They defeated Democratic nominees , incumbent Democratic President Woodrow Wilson and Vice President Thomas R . Marshall . 
<triplet> President <subj> Vice President <obj> substitute/deputy/replacement of office/officeholder <triplet> Woodrow Wilson <subj> Democratic <obj> member of political party <triplet> Thomas R. Marshall <subj> Democratic <obj> member of political party <subj> Vice President <obj> position held