Today on Mac & Gaydos...
3:15 p.m.: Legendary ABC newsman Sam Donaldson breaks down Tuesday's election like no one else can.
5:35 p.m.: What's been the history leading up to this election? Do any reminders of the past change your mind?
6:05 p.m.: What would be the perfect storm on Election Day? There are four events that could ruin Tuesday's election.