It's tea time in America. Conservative Christine O'Donnell pulled off a stunning upset over nine-term Rep. Mike Castle in the Republican Senate primary in Delaware Tuesday, propelled by tea party activists into a November showdown with Democrat Chris Coons.

After a primary season shaped by economic pain and exasperated voters, the grass-roots, anti-establishment movement can claim wins in at least seven GOP Senate races, a handful of Republican gubernatorial contests and dozens of House primary campaigns, and it influenced many others.

In the fight for New Hampshire's Republican Senate nomination, a second insurgent trailed in vote counting that was still going on Wednesday. After lagging in early returns, former Attorney General Kelly Ayotte moved ahead of Ovide Lamontagne with a lead of roughly 1,000 votes, with results tallied from 85 percent of precincts. Ayotte was backed by establishment Republicans and Alaska Gov. Sarah Palin; Lamontagne, a former chairman of the state Board of Education, campaigned with the support of tea party activists...