In a video announcement on his campaign website, Guinta said he's running again for Congress because "politicians in both parties seem more interested in fighting than making tough decisions and solving our problems."

He touts his work as mayor of Manchester from 2006-2009, but makes no mention of the term he spent in Congress, or Shea-Porter, who took back her seat last cycle in one of the nation's closer races.

Guinta lost that year by just 4 percentage points, and Republicans have high hopes for his success this year. He's considered a top recruit and a WMUR Granite State poll issued in July indicated a plurality of voters, 42 percent, would prefer someone other than Shea-Porter to represent them in the first district.

Guinta will likely face a primary challenge in Dan Innis, a University of New Hampshire dean who said last week he'll resign from his current post and is expected to enter the race soon.

But he looks to have the establishment support, and the already-established fundraising network and name recognition, to make it through the primary.