I am not dissembling. They voted on issues they believed were being ignored. You voted because you want to go to bed with the guy. (j/k).
If you are talking about Gore being in office, then through your 20/20 hindsight you blame Nader voters, because Iraq wasn't an issue in that election.
In the second one with Kerry, note how many fewer made that leap. They generally agreed with you. However there were a few who thought their "first line issue" whatever it happened to be, was stronger than your "first line issue".
You project your thought pattern on to those people, and suggest that they were wrong for voting how they believed.