Democrats anticipating a final victory by Al Franken in the Minnesota Senate race could be poised to assume a level of power not seen for three decades after Sen. Arlen Specter of Pennsylvania rocked Washington on Tuesday by switching parties.
The defection by Specter, a 29-year Senate Republican, would give Democrats the 60 seats they need to overcome any GOP resistance -- if Franken becomes the next senator from Minnesota.
The Minnesota race is headed to the state Supreme Court, where Republican Norm Coleman is appealing this month's election-trial ruling, which found that Franken finished 312 votes ahead.
"The stakes have just gotten much higher," said Richard Hasen, an expert on election law at Loyola Law School in Los Angeles.
If Coleman's state Supreme Court appeal fails, Hasen added, "the pressure from national Republican leaders to appeal to the United States Supreme Court could be enormous."
While Specter's switch gives the GOP a much bigger incentive to continue the fight over the Minnesota seat, it could be that much harder for the Senate's 40 remaining Republicans to block Franken from being seated if he prevails before the state high court.
Specter's surprise move is itself a sign of the Republicans' deepening electoral troubles nationwide. Not since 1978 have the Democrats controlled the presidency and the U.S. House and held a supermajority in the Senate.
Neither the Franken nor the Coleman campaign had an immediate comment on the political effect of Specter's move.