If one could apply mean, median, and mode to voters the mode would be the typical republican since mode is the most commonly occurring thing in any set of things. Judging from how fearful republican politicians are to get on trump's bad side by calling out anything he does the mode of republican voters would seem to be trump's staunchest supporters which are the evangelicals who don't want to get gay married and the white folks that think that the coastal liberal elite and immigrants and other minorities are all out to screw them over somehow.