I think that if you really buy into the one box arguments presented elsewhere on this site, you should be voting. (conditional on the assumption that you have significant policy preferences; if you don’t care either way, then there is nothing analogous to the million dollars)

Not at all, if Omega is offering me 1$ for one-boxing I see no need to play its game since I can get more utility doing other things. Voting probably doesn't get any particular voter more than a few dollars of expected utility in government action. The delusions associated with voting probably give them far more but again like with the lottery I find that a waste since they can be gained in other ways (some of which do the world some good).