The New Hampshire Union Leader reported Monday that Guinta had hired his old campaign manager, Ethan Zorfas, who confirmed that the former congressman is looking again at his old seat.

"Frank has begun making calls to donors and to Republican leaders and discuss running again for the U.S. House," Zorfas told the paper.

Guinta confirmed that he had discussed his political future with his family and would be announcing his plans in September. But in comments to the paper, he sounded like a candidate, charging that he heard from New Hampshirites that they're unhappy with the economy and "the level of representation they are getting in the first congressional district."

Guinta was first elected to the House in 2010, when he easily unseated Rep. Carol Shea-Porter (D). She ran again in 2012 and took the seat back from Guinta but is considered by Republicans to be vulnerable in 2014.

With Guinta deciding against the Senate run, Bradley is the likeliest Republican to run. He told The Hill in April that he's leaning toward a Senate bid.

Former Massachusetts Sen. Scott Brown is also rumored to be considering a run in New Hampshire.

State Sen. Gary Lambert (R) is also reportedly looking at a run in New Hampshire's 2nd district, against Rep. Ann McLane Kuster (D). He, too, is working with Zorfas and met with National Republican Congressional Committee officials on Monday.