"I can't help but consider why the terrorists do not bomb polling places and kill lots of people on election days.
Does it not seem strange that just days and hours after the election, the insurgants are killing innocent Iraqis but do not do so on election days?"
Always look for the obvious explanation. On election day there was heavy security, curfews and cars banned from the streets. Why launch attacks on the day when they will be hardest to pull off?
Even if they took heavy casualties you'd think they would launch major attacks just to get the media coverage.