I think an old adage says to avoid any really serious arguments about politics, religion, etc in any marriage because of its unnecessary strain. In this case, strain is definitely an understatement. The election in 2012 wasn't all that close at all with Barack Obama handily defeating Mitt Romney. According to this woman, though, her husband was at fault for Romney's loss.
Taking matters in her own hand, this Arizona woman could not take the fact that her husband did not vote for Mitt Romney. The only logical, rational way to show her displeasure was obviously to run him over to prove her point. Long live politics in relationships!