The New Hampshire primary [2] later today is only the second stop for the Republicans in a long campaign for presidency, yet for most of the candidates it will be make or break.

However, instead of concentrating on their policies and reaching out to the undecided populace -- only 44 per cent [3] of voter's polled said they had made up their mind -- the GOP candidates have engaged in a week of smear campaigning, with front-runner Mitt Romney the main target.

The tone of the campaign was well and truly set by the pro-Newt Gingrich Political Action Committee (PAC), Winning Our Future, with the release of a stinging anti-Romney documentary [4]. The 30 minute film -- "When Mitt Romney came to Town" -- has yet to be released in full, but the three minute trailer attacks the former governor of Massachusetts for his actions during his time at the investment firm Bain Capital.

The video has led Romney, who has spent the last day of campaigning in New Hampshire trying to undo his own gaffe [5], to be portrayed as a modern day Gordon Gekko [6], the corporate raider immortalised by Michael Douglass in the 1987 film "Wall Street".

Gingrich attempted to solidify this view during last weekend's debates during which he grilled [7] Romney over his lack of dedication to his constituents whilst he was governor.

The release of the documentary's trailer has underscored the the campaign as a tit-for-tat game that has impressed few voters. According to a national CBS poll [8] released yesterday, 58 per cent of registered Republican voters have said they want more presidential choices, with only 37 per cent stating that they were satisfied with the candidates.

According to John Dickerson, writing on Slate.com, the party is suffering from a "humor crisis", confusing insults for jokes. He writes [9]:

Humor suggests that no matter how dark things are, you have the sensibility to laugh, to see a bit of sun around the corner... A joke well-told gives the audience something they can pass along later to their friends. It magnifies your message easily or at least makes voters feel good enough that they report back favorably about their experience at your rally.

The candidates have concentrated all their energies on attacking the front-runner despite all the indications that regardless of his gaffes and embarrassment, he will still come first in the vote later today. The polls [10] have consistently placed Mitt Romney in first place ahead of Ron Paul and Jon Huntsman who is currently tied in third place with Rick Santorum according to the WMUR/UNH poll.

Romney may take New Hampshire but the real challenge ahead is who the Republican party will choose to rally behind come January 21 in South Carolina. The votes have been too close for any candidate to emerge as a clear winner; with all their skirmishes, the candidates have failed to put themselves forward to their own party and are instead damaging their own bids for the Republican presidency nomination.