What do the Tea Party and the Democrats have in common?
Both are claiming they got what they wanted in yesterday's final round of Republican primaries.
Anti-establishment Tea Party candidates won, led by a big upset in Delaware.
At stake is the balance of power on Capitol Hill.
Insiders believe the struggle might have shifted the Democrats way because of Christine O'Donnell's victory in.
O'Donnell beat incumbent Republican Congressman Mike Castle, who's refusing to endorse her.
As the spotlight shines on the inexperienced conservative the White House is celebrating her win.
"The Republicans in Delaware nominated somebody that they don't believe can win, I think, in the words of the state party chair, couldn't be elected dogcatcher," pointed out White House Press Secretary Robert Gibbs.
O'Donnell is part of this year's pattern.
Tea Partier Rand Paul won the GOP Senate primary in Kentucky, Sharron Angle in Nevada.
Joe Miller won in Alaska, beating incumbent Lisa Murkowski.
Incumbent Robert Bennett was ousted in Utah.
A New York Tea Party candidate won last night's Republican primary for Governor.
"If we've learned anything tonight it's that new yorkers are as MAD as hell!!" Carl Paladino said after his win.
Victories for the Tea Partiers, but also, Democrats claim, victories for them.
"We feel very very comfortable that we're going to win races in November that six months ago we felt like we were going to lose, because of these candidates," said Democratic National Committee Chairman Tim Kaine.
Still, the Republican establishment is racing to embrace its new winners and their fiery rhetoric.
It's still not clear whether Christine O'Donnell and Tea Partiers like her will help or hurt the GOP in the fall.