Was the symbolic "veto" intended to distract from his vetoing of a budget? In any case, Minnesota Governor Mark Dayton sure loves vetoing things:

After laying waste to the GOP's fiscal agenda by vetoing the entire budget, DFL Gov. Mark Dayton followed up by punching a hole in their social agenda.

On Wednesday, Dayton vetoed restrictions on abortion and symbolically vetoed a move to put a constitutional ban on same-sex marriage on the 2012 ballot.