Donald Trump's presidential campaign has been unconventional, but naming Indiana Gov. Mike Pence as Trump's running mate would be a quite conventional move. Pence would balance the ticket in almost every way.

First, their personalities. Trump is unpredictable, forceful and, at times, impolite. Pence is predictable, some might say to a fault. Pence does not shy from a fight, but "forceful" is not a word that is used often to describe him. Pence is Midwestern polite.

Both of them have a knack for dealing with the media, but in different ways. Trump has honed his skills through decades of media exposure, as a business executive and as a reality television star. Trump is spontaneous and delivers an embarrassment of sound-bite riches. Pence has honed his skills as a talk radio show host, frequent guest on news and opinion shows, and as a speaker at political gatherings. Pence gets on message and stays there.