January 15, 2016. Boise, ID. (ONN) The Constitution Party will be holding its national nominating convention on April 13-17, 2016 in Salt Lake City. Already, there are a slew of Presidential candidates running for the Party’s official nomination. Three of those candidates have risen to the top and are waging passionate and serious campaigns for the White House. They are scheduled to debate each other in the Constitution Party’s first official Presidential debate next month in Boise.