Gov. Christie hasn't announced whether he's running for president, but the political operation backing him is continuing to grow.

The Leadership Matters for America political action committee disclosed Monday that it had hired two new staffers in New Hampshire, bringing the number of on-the-ground staff in the state that holds the first presidential primary -- and where Christie has made repeat trips in recent weeks -- to four.

America Leads, a super PAC supporting Christie, has also hired more people, according to a news release that went out Monday. A dozen people are now working with the super PAC, many as consultants, according to a spokesman.

The New Hampshire hires for the Leadership Matters committee are Britt Carter, recently the statewide field director for the New Hampshire Republican Party, and Ben DeMarzo, who was campaign manager for the 2014 reelection of U.S. Rep. Keith Rothfus, a Western Pennsylvania Republican. (DeMarzo also has Jersey ties: A Rutgers graduate, he previously served as chief of staff to Assembly Minority Leader Jon Bramnick.)

The hires were first reported by the New Hampshire Union Leader.

America Leads, meanwhile, announced a "senior leadership team" led by Phil Cox, who was executive director of the Republican Governors Association while Christie served as its chairman last year.

The team's hires include Doug McAuliffe, a political advertising consultant who has worked on U.S. Senate and House and gubernatorial elections; Mike Leavitt, a media strategist who was a consultant to Maryland Gov. Larry Hogan, the Republican who pulled off a surprise victory last year; Republican pollster and strategist Gene Ulm; and digital-agency co-founder Kurt Luidhardt, who counts Christie among his past clients, along with another potential 2016 Republican candidate, Wisconsin Gov. Scott Walker.

"Our team looks forward to bringing the governor's record of results, bold and positive vision for our country, and straightforward and honest leadership style directly to Americans in the months ahead," Cox said in a statement. "At a pivotal moment in the history of our nation, Governor Chris Christie is unafraid to lead."

And still undeclared. Christie has said he will make a decision on a 2016 campaign this month.