In the lead up to, and wake of, Tuesday night's nailbiter of an Iowa Caucus several Republican Presidential hopefuls took to Twitter to rally their supporters...and take a few shots at their rivals.

With Mitt Romney and Rick Santorum finishing a mere eight votes apart, the two big winners of the night decided to take the high road when it came to their GOP peers. Santorum tweeted of his "Iowa Surprise," and quickly turned his attention to promoting his upcoming New Hampshire appearances. Mitt Romney, the actual winner of the contest, also kept things fairly mundane on his Twitter account. Romney reminded voters of his victory in the opening round of the 2012 GOP race and saved his harshest shots for President Obama. Romney is still the front runner, and he acted like it on Twitter.

That brings us to the rest of the field, those candidates who were banking on a big night in the Hawkeye State and ultimately came up short. This is where things got a little ugly.

Newt Gingrich, who briefly moved to the head of the Republican pack before being hit by a barrage of negative Romney advertising, finished a disappointing fourth place in Iowa which was seen as a hugely damaging (if not fatal) blow to his White House aspirations. Gingrich followed up a rather bitter concession speech, in which he implicitly offered support for Santorum and sent signals that the gloves were coming off in regards to Romney, with the first of several tweets taking a shot at the former Massachusetts Governor.

In the heat of a Republican primary contest, there are few labels more damning than that of "Massachusetts Moderate." Gingrich's move to play offense may be too little to late when it comes to his own candidacy, but he has made it clear that his new intention is to damage Romney as much as possible. Tweets like this are evidence of that strategy.

Ron Paul, who finished a close but disappointing third place in Iowa, wasn't shy about taking shots at his rivals on Twitter in the hours leading up to the caucuses. Paul's campaign twice used Twitter to hit Santorum on charges that he supported the Obama healthcare plan and a "big-gov politician" who supports the status quo. Of course Ron Paul tends to label pretty much anyone not named Ron Paul as a "big government politician," and Paul's supporters most likely do not cross-over with Santorum's blue collar culturally conservative base, but a shot is a shot.

Paul also made noise on caucus night by taking an overt shot at Jon Huntsman, the former Utah Governor who passed up campaigning in Iowa to focus his efforts on New Hampshire. A member of Paul's staff, using the official campaign Twitter account, sarcastically tweeted at Huntsman that his "one Iowa voter" had been found in case Huntsman wanted to call the voter to offer thanks. This tweet briefly disappeared from the timelines of the 162,000+ people following this account, only to re-appear a few minutes later.

Finally we come to Buddy Roemer. Yes, the former Louisiana Governor who is running a dark horse campaign for the White House and has had virtually zero national coverage so far. Roemer will most likely be watching the next Presidential inauguration from his living room, but that hasn't stopped him from maintaining a Twitter feed that is a must-follow for political junkies and fans of stream of consciousness ramblings.

Roemer has made no secret of his disdain for Mitt Romney, calling Romney a "stuffed corporate shirt" who attended finishing school and all but accusing him of tax evasion in a pair of tweets appearing in the hours following Iowa. We doubt Romney will respond to these accusations but that doesn't make them any less hilarious.

Roemer also passed a comment regarding Santorum, but we'll leave it to you the reader to decide whether this is praise, an insult, or something in between. Whatever it is, it is unlikely to be seen from any of the more mainstream candidates.