One word comes to mind:
Negativity.
While every candidate wants to win, it is important to stand for your ground, stay focused on the issues, and the issues this election are economy, health care, jobs, spending, deficit, and national debt. These are some of the main issues this country is facing right now, and the more one focuses on attacking another candidate, the more the focus is taken away from the important issues.
When a more conservative democrat isn't happy about the way things are going with the current administration, its important for a different party to show them what they have to offer in the way of solutions, negative campaigning towards a party member takes away from the issues, and that member who may be unhappy with their party, won't look elsewhere because of the fighting and negativity in some campaigns, thinking that's not a solution.
And while the press is great at twisting and turning words to make things sound worse than they were meant (Romney Etch a Sketch for example). Not only did Rick Santorum have to explain, and re-explain what he meant, Romney had to defend himself at times against a comment and that could have been time spent on the issues that this country is facing.
We can disagree with candidates, I've had disagreements with candidates, but in the end, it shouldn't be about negativity, it should be about where each candidate feels they can take this country and change the direction of this country, how they can make a positive impact on negative policies that have been allowed to happen.
What I find truly amazing is how some candidates are able to rise above the negativity and keep focus on the issues and not what another person is saying about them. And I think at times its not easy, but I've heard candidates themselves say they are not going to stoop to that level, and they remain focused on the issues and their campaign.
Here's wishing for a mud free slinging campaign for the rest of the time before the primary.