If you go to bed on election night and don’t know who won a midterm congressional race, that’s normal. And if you wake up the next morning and find that a candidate who was behind hours earlier has since pulled ahead, that’s normal, too…

…“There are always a handful of really close Senate and House races in which the winner will not be determined for several days or, in the cases of Alaska and California, as much as a week or two,” said Joe Lenski, executive vice president of SSRS, which conducts a national exit poll on Election Day.