Why would you do it before major elections if it's just about book keeping? You could purge them a month after mid-terms and a month after general Presidential

Why would you do it before major elections if it's just about book keeping? You could purge them a month after mid-terms and a month after general Presidential because those get the most turnout. When you purge your voter roles becomes a lot less important if you allow for registration/reregistration on election day regardless. Oregon has same day registration update (and we have motor voter) and no long-lines because we vote primarily by mail. Disenfranchising voters to 'avoid long-lines' is just a red herring. There are lots of ways to create quick, safe voting. Election problems are the result of a deliberate attempt to make voting harder for certain people. Full stop.