Martha Coakley has conceded. The comfortable margin of victory is nothing less than a landslide. A remarkable result, following results in New Jersey and Virginia, which were themselves extraordinary. Coakley will be blamed, vilified, and sneered at by establishment Democrats. But make no mistake: this is a “stunner,” as Juan Williams put it. The series of drubbings in states hardly considered conservative strongholds is a signal that the country a year after electing Obama has had enough. Democrats can double-down, as Williams said, or save themselves and their party. The determination of the White House and congressional leaders to throw themselves over the political cliff may be undiminished. Obama’s Democratic troops may not, however, go willingly to their political deaths.