A quick look at primary results in New York, New England, Maryland, and Wisconsin

While Christine O'Donnell's upset of Mike Castle is undoubtedly the story of the night, Delaware wasn't the only state holding a primary election tonight.

Here's a quick summary of contests in other states.

New York

• Kirsten Gillibrand easily captured the Democratic nomination for U.S. Senate (she had one Democratic rival). Her Republican opponent will probably be Republican Joseph DioGuardi.
• Tea party favorite Carl Paladino — who has made headlines for sending out inappropriate emails — has decisively beaten also-ran Rick Lazio for the gubernatorial nomination. Paladino will face Andrew Cuomo in the general.
• Kathleen Rice and Eric Schneiderman are running neck and neck in the contest to succeed Cuomo as Attorney General. Nobody sought the Republican nomination, so whoever wins the Democratic primary is New York's next attorney general.
• Embattled incumbent Charles Rangel, who is seeking reelection to the U.S. House, managed to pull in 52% of of the vote, more than all of his challengers combined.

Maryland

• Most of Maryland's Democratic incumbents faced challengers in the primary, but none are in danger of losing their respective nominations. In the gubernatorial race, Robert Ehrlich defeated Brian Murphy for the Republican nomination. He is now set for a rematch against Governor Martin O'Malley.
• Donna Edwards, one of the House's most progressive members, was among the incumbents who easily dispatched her opponents.

Massachusetts

• Bill Keating won the Democratic nomination in MA-10, succeeding retiring incumbent Bill Delahunt as the party's standard-bearer. Keating will face Republican Jeff Perry in the general.
• Mac D'Alessandro, meanwhile, came up short in his bid to unseat Stephen Lynch (one of the Democrats who voted against the Patient Protection and Affordable Care Act). He only managed to get get 35% of the vote in MA-09.
  

Wisconsin

• Julie Lassa won the Democratic nomination in WI-07, the seat currently held by David Obey, with a commanding 85% of the vote. She will face Republican Sean Duffy in November.
• Tom Barret, meanwhile, was overwhelmingly chosen by Democratic voters to succeed retiring Governor Jim Doyle as their standard bearer. Barret's Republican opponent will be Scott Walker.
  

Rhode Island

• Providence mayor David Cicilline overcame three other challengers to capture the Democratic nomination for Patrick Kennedy's seat. If he wins in November, he will be the fourth openly gay member of Congress.
• John Robitaille won the Republican gubernatorial primary. He is seeking to succeed Donald L. Carcieri, who was term-limited out of office. Robitaille will face Frank Caprio in November.

Finally, in early returns from the District of Columbia, Mayor Adrian Fenty is running behind his most serious challenger, Council Chairman Vincent Gray.