The Kennedy political dynasty is shaking in the aftershock of U.S. Sen. Scott Brown’s earth-shattering election, with a new poll showing U.S. Rep. Patrick Kennedy losing ground as he faces a well-financed GOP foe backed by Brown’s top strategists. The WPRI-12 poll showed the Rhode Island Democrat with a 56 percent unfavorability rating in his district - a negative that grows to 62 percent statewide. Only 35 percent of voters in Kennedy’s district said they would vote to re-elect him. Another 31 percent said they’d consider a different candidate and 28 percent said they would vote to replace him, according...