The Republican race is becoming a free-for-all, with all eyes trained on one key state

donald trump jeb bush cnn debate
donald trump jeb bush cnn debate

(CNN/screenshot)
Donald Trump and Jeb Bush.

Presidential contenders who are members of the Republican Party's so-called establishment are growing increasingly snippy as their eyes train on what's looking more and more like a make-or-break state: New Hampshire.

Over the past week, Gov. Chris Christie of New Jersey sniped at the poor Senate-attendance record of Sen. Marco Rubio of Florida. Allies of Jeb Bush, the former Florida governor, went after not only Rubio, but also Christie and Gov. John Kasich of Ohio.

And Rubio's campaign referred to Bush's operation as "sad."

"It's sad to see Jeb's 'joyful' campaign reduced to such intellectual dishonesty," Rubio spokesman Alex Conant said Tuesday, responding to what the Rubio campaign felt was a factually incorrect attack ad released by Right to Rise USA, a pro-Bush super PAC .

The uptick in sparring has come less than 50 days before voters cast their ballots in New Hampshire, perhaps the most important state for these four establishment contenders who have been upended by the shocking rise of the party's so-called outsiders in the 2016 election cycle. Next week, every major presidential candidate is set to visit the Granite State.

Amid the rise of real-estate magnate Donald Trump — and, to a lesser extent, Sen. Ted Cruz of Texas — the establishment-oriented candidates are intensely jockeying to put themselves in position to win New Hampshire's primary. Because of Trump's dominance, many candidates would probably be happy to grab a strong second-place finish there to rally the GOP establishment behind the runner-up.

New Hampshire could become especially significant if Trump or Cruz wins Iowa, the first caucus state. Trump is neck and neck with Cruz there, but the businessman is up by about 14 points over his rivals in New Hampshire, according to a RealClearPolitics average of recent surveys.

Faced with the possibility of two Trump victories in a row — or a split between Cruz and Trump — some in the party believe New Hampshire's outcome could lead to a rapid panic within the party's establishment to coalesce behind its best chance of beating back the GOP's insurgent wing.

In simpler terms: If one of the four establishment candidates separates himself from the pack in New Hampshire, he could quickly find himself in a head-to-head battle with Trump or Cruz.

"It would raise the stakes in New Hampshire," said Matt Mackowiak, a veteran Republican strategist who is the president of the Potomac Strategy Group. "The establishment would have to quickly unite behind whoever does best [next to Trump] in New Hampshire. And what you'd see is a very rapid coalescing."