With the "success" of the nutcase wing of the wingnut party in NY 23 by chasing out Scozzafava the zealots are tasting blood in the water and other wingnut candidates have got to be worried.
Starting with Crist in Florida. Rubio has been gaining and I am sure this will give him a new breath of fresh air, and new funding, in his attempt to knock off the "establishment' candidate in the primary.
Blunt in Missouri is also facing a locally grown nutcase in his primary. Since his state is a relatively "inexpensive" media state a shoot of funds from the true believers to fund the Blunts opposition will go a long way.
This will probably put the end to any hope that Kirk would have in illinois as well.
Over all this "victory" by the extreme will make any rethuglican candidate run so far to the right to appease the crazy's that it will be difficult for them to scramble back into the realm of the sane in the general election.
This poses a risk for the D's as well. 
Since now the rethuglicans with a minimal level of sanity will be looking for a new home it is important for the D's not to let them in.
If they are allowed in they will simply pull the D's to the right and start them on that slippery slope to insanity that they did to the R's when they gave the nutcases any consideration.
This will pull the entire debate further to the right alienating the Democratic base and effectively disenfranchising even more voters who will not have a political party that represents the interests of the working, the teachers, the poor, the non delusional and those that truly care about humanity, the world and their country instead of ideologues so enamored with theories and myths that they would sacrifice all on the alter of their fantasies.
Let the so called Rethuglican moderates fight for their party and bring it back into the realm of the sane. If they do not have the courage to face down the monster they have created they are worthless to any other political interest.