Maybe sweeps are in November because that is when the elections are? Anyway the problem with electronic voting is not only that it is hard to do right, but also that it is impossible to show the average voter that it has been done right. With paper ballots and each party having a representative at the polling place and at the counting, voters are willing to believe the count is accurate. The offer to examine the source code is less convincing. Saying that the source code has been examined by someone paid for by the company that wrote the code is nothing at all.