Albert R. Hunt: How to follow the election returns

American voters should be forgiven for a bit of impatience when midterm election results start coming in Tuesday evening. They've been through a long and divisive campaign and they'll want to know who prevailed. But their verdict on the state of American democracy is unlikely to reveal itself quickly as the evening unfolds. Here's a guide to following the clock.With predictions of the largest midterm turnout in more than half a century, the first polls close at 6 p.m. in parts of Indiana, where