Tuesday marked the last of 2010's big primary election days, with races happening in five states. Here's a roundup of the results to know about, from Tea Party upsets big and small to vulnerable Democrats to the ousting of Mayor Fenty in DC:

  • Delaware Senate: The story of the night was Christine O'Donnell's surprise victory in the Republican primary, which wasn't really a surprise if you believe the polling that came out two days ago showing her narrowly ahead. The Delaware GOP, the National Republican Senatorial Committee, and a whole slew of Republicans seem to dislike her quite vehemently, and, worse, to think she can't win a race in November. O'Donnell knocked off Congressman Mike Castle 53 - 47 percent.

  • New Hampshire Senate: Attorney General Kelly Ayotte held a narrow edge over lawyer and former gubernatorial nominee Ovide Lamontagne into the early hours of Wednesday morning, 38 - 37 percent with 83 percent of precincts reporting. Ayotte was backed by the GOP's Senate campaign committee, though Lamontagne has come on strong in the final stretch of the campaign.

  • DC Mayor: Mayor Adrian Fenty is ousted by his rival, D.C. Council Chairman Vincent Gray, in an election that tested Fenty's image as a leader as well as his controversial school reforms under public schools Chancellor Michelle Rhee. The Washington Post called it with 27 percent of precincts reporting, as Gray led Fenty 57 - 42 percent. The election will be seen by some as a referendum on education policy, with teacher firings under Rhee's reform approach helping turn support away from Fenty.

  • NY-15: Rep. Charlie Rangel won the Democratic nomination for his seat, essentially securing re-election. Despite the ethics inquiry and charges against him leveled by the House ethics committee, Rangel repelled a challenge from Adam Clayton Powell, IV, whose father was ousted by Rangel.

  • NY-1: Randy Altschuler won the Republican nomination to challenge Rep. Tim Bishop (D) for his Long Island district in what figures to be a competitive November race. Altschuler is a businessman and first-time New York House candidate. Here's the playbook on him, from the North Shore Sun:
Mr. Altschuler was attacked by his fellow Republican hopefuls as someone who only first registered to vote here two years ago. He has been hit for allegedly creating a business that outsourced jobs to India, for attempting unsuccessfully to run for Congress in New Jersey and for failing to vote for most of his adult life.

  • New York Governor: Former Congressman Rick Lazio led the Republican primary in major polls up to Tuesday night, but he got trounced by Tea Party ally Carl Paladino, a millionaire developer who lost out at the Republican state convention and petitioned his way onto the ballot. Democrats nominated Attorney General Andrew Cuomo, who is expected to win the general election in November.

  • MD-1: Vulnerable Democratic Rep. Frank Kratovil will see a rematch with his Republican opponent from 2008, state Sen. Andy Harris, who fended off the respectable spending of primary opponent Lee Fisher. Kratovil won with 49 percent of the vote in 2008; he could fall prey to an inhospitable election climate in 2010.

  • Wisconsin Senate:┬áRepublican businessman Ron Johnson advanced, as expected, to face Democratic Sen. Russ Feingold, whom he has narrowly led in a series of Rasmussen polls. George Will has called him "what the Tea Party looks like."

  • WI-8: Tea-Party-backed roofing contractor Reid Ribble beat out two state legislators in the Republican primary in district held by Democrat Steve Kagen, which is considered a toss-up for November.

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