BobC:
I don't really see the parallel, but I also don't have a major problem with voting. I just don't do it.
Though I agree that Pascal's Wager is nonsense. 
Pascal's wager basically says (you already know of course, but just for the sake of clarity) that you'd better believe in gods "just incase". What if there is a god? You don't wanna go to HELL do you? DO YOU? >insert finger pointing and fist shaking< So why risk it by not believing?
So applying that to voting might be something like... You'd better vote "just incase". What if some "crazy guy" gets in because you didn't vote? What if he has a bunch of "crazy policies" that makes the poor explode or sumthin'. You don't want the poor to go to HELL do you? DO YOU? >insert finger pointing and fist shaking< So why risk not voting?
This is the core argument that I almost always hear for voting (though sometimes it can be changed to a positive about the guy who has the "crazy policies" that are good but even then there is still the implication, if it isn't said outright, about how bad everything COULD possibly be if the "other guy" was elected).
I think that perhaps the core parallel, aside from the language (imperfect and, at least in my version, sloppy though it may be) is that the argument is based on the same sort emotional blackmail, playing on the fears that have been inflicted upon you to make you conform.
"Hey, X arbitrary thing might just happen if you don't do Y arbitrary thing, you never know, so you'd better do it just to be on the safe side."
Putting the argument in more general terms like that makes me realize (just now in fact) how much that shit has been used to inflict anxieties upon me throughout my life.
l've a lot of anxiety around being early to appointments, like by half an hour to an hour. My parents would use this Pascal's Wager argument to justify sitting around in a waiting room or in the parking lot for an extra 45 minutes. Putting that into the frame work of Pascal's Wager is quite helpful in realizing how ridiculous things that like are.
What an odd thing to get out of your post. I hope what I said makes sense and thanks for asking that. 