Tea Party activists are now talking openly about backing a Republican primary challenger against Mass. Sen. Scott Brown. "I think the significance of that is –- I don’t know if he’ll get a primary challenge or survive in 2012 - but that is what every Republican in the Senate and the House up for re-election in 2012 has to be thinking about," said Salon's Steve Kornacki. "It’s going to have that threat hovering over them on every key vote for the next two years."