"The Ground Game" and the Election Outcome
Candidates who are a bit behind in the polls are counting on either "enthusiasm" or their "ground game" (or both) to win for them.
The ground game is mainly about painstaking efforts to identify voters--door to door is most effective--and then get them to the polls. As Ford O'Connell and Steve Pearson of The Daily Caller observe, in modern campaigns TV is essential but insufficient, particularly in a close race.
Polls show a Republican tide, but look closely and you see that while people who seem to be "likely voters" are prepared to vote Republican this year "registered voters" are more Democratic.
Organizational action can make up for a deficit of commitment on the part of voters. Public employee unions are good at the ground game, whereas only once recently, in 2004, have Republicans developed a ground game that was very successful. Therefore, to the extent Democrats are able to get their voters out they will cut their otherwise major losses tomorrow.
Of course, one problem with a ground game: getting voters to the polls may bring out a goodly proportion that don't wind up voting your way!