This article contains opinion polling by U.S. state for the 2016 Republican Party presidential primaries. The shading for each poll indicates the candidate(s) which are within one margin of error of the poll's leader. For the significance of the earliest state votes, the Iowa caucuses and the New Hampshire primary, see United States presidential primary – Iowa and New Hampshire. For when any given state votes, see Republican Party presidential primaries, 2016 – Schedule of primaries and caucuses.
