North Carolina’s Democratic Senate candidate Erskine Bowles apparently has written his campaign three checks worth a total of $3 million since Oct. 10. It may be a sign of desperation: His GOP opponent, Richard Burr, seems to have all the momentum in the race. The Burr campaign is of course talking about Bowles attempting to “buy the election at the last minute.” A candidate spending his own money on his own campaign neither shocks nor dismays me, but it could be a very effective line of attack for Burr in these final hours.