Ron Kaufman, a political strategist and friend of the former Bush aide, said Republicans are pressuring Card to consider a run. In an email to the AP, Kaufman said that Card, a Massachusetts native, has not yet decided whether to enter the race.
The only Massachusetts Republican to have formally entered the race thus far is Canton Selectman Bob Burr. Businessman Christy Mihos and former Boston Red Sox pitcher Curt Schilling are also considering running for the GOP nomination.
The two Democratic candidates who have announced runs are Massachusetts Attorney General Martha Coakley and Rep. Michael Capuano.
Primaries will take place in December and the general election will be held in January for the seat.