Manchester, New Hampshire (CNN) – Mitt Romney snapped up two of the biggest endorsements in New Hampshire last weekend - in particular Sen. Kelly Ayotte, easily the most valuable endorsement in the state so far.
But with the first-in-the-nation primary just seven weeks away, which state Republicans are left who could still jump in and make a difference in the GOP presidential contest?
Programming note: GOP presidential candidates face off at 8 p.m. ET Tuesday, November 22, in the CNN Republican National Security Debate in Washington, D.C.
And will they follow the lead of many other prominent Republicans in the state and back the former Massachusetts governor - who has consistently lead in the polls but who still struggles to seal the deal with some conservatives, or opt to take a chance on another candidate?
Here's the short list:
Frank Guinta: The last unaffiliated Republican in New Hampshire's congressional delegation, Guinta quickly rose to power in the state and was elected to Congress last year. Then-Manchester Mayor Guinta endorsed former New York Mayor Rudy Giuliani in 2007. Endorsing a more moderate candidate like Romney could hurt him with the conservative voters he needs to win re-election next year. Signs point to Guinta keeping out of the race for the near future.
Ovide Lamontagne: Lamontagne, a conservative gubernatorial candidate with tea party support, has fashioned himself a kingmaker in New Hampshire's GOP presidential primary race. He's opened his home to a series of candidates, inviting prominent state Republicans to mingle with the 2012 hopefuls. Lamontagne supported Mitt Romney in 2008 but this cycle his role as host has meant he's been open to all the candidates - so far.
Union Leader editorial page: The Union Leader has suffered staff cutbacks but is still a powerful driving force for political coverage in New Hampshire. An endorsement from the paper's conservative editorial board is a major coup for a candidate, which explains why Herman Cain was pilloried for skipping a meeting with the paper last week - and why he quickly rescheduled. Last cycle the paper endorsed Sen. John McCain in early December.
William O'Brien and Peter Bragdon: The conservative state house speaker and senate president rode to power on a wave of tea party support in 2010. Leading an overwhelmingly Republican legislature, the two have made controversial decisions, such as significantly cutting the state budget and supporting looser gun regulations. Bragdon has signaled that he will make a decision before the primary, while O'Brien has stayed mum. If anyone were to go out on a limb and endorse more from passion than politics, it would likely be one these state leaders. But they haven't done so yet.
Ted Gatsas: The enormously popular Manchester mayor has been mentioned as a possible candidate for governor. He is a canny politician with a reputation for pragmatism and is regularly courted by presidential hopefuls. Last cycle he endorsed John McCain a few days before the primary. Gatsas told CNN he's planning "serious talks" with the candidates in the next few weeks and should endorse in December.
Kevin Smith: Another conservative candidate for governor with tea party ties, Smith is the former head of Cornerstone Action. Smith defended Rick Perry after the Texas governor's Cornerstone speech, in which some in the blogosphere questioned whether Perry was under the influence. (Perry said he wasn't.) Smith could benefit from the attention he would receive if he endorsed, but told CNN he doesn't plan to jump in: "This is a personal decision for me."
– CNN Deputy Political Director Paul Steinhauser contributed to this report.