I already voted this morning with early voting. Normally I vote on election day, but this year I will be way too busy with GOTV efforts.
spindles: We have a standardized way of voting, it's just by state, not country-wide. The presidential election is the only national election we have, and it is technically 51 elections in the 50 united states, plus the District of Columbia. Election Day is always the first Tuesday after the first Monday in November, but more and more states are giving the option of early voting, not to mention absentee ballots, to make it easier.
I've voted in the city of Chicago as well as in the suburbs of Chicago, and I've never had to wait in line more than maybe 15 minutes to vote. Then again, I haven't voted during the time everyone is getting off of work, so I suspect that's when a lot of people have to wait in line. This year will likely be even worse, because record turnout is expected.