Well, Rush Limbaugh has made no secret that the purpose of his "Operation Chaos" - having Republicans cross over to vote in a Democrat primary - was to keep the Democrat primary season going as long possible (subscription required, I think) to keep having Hillary and Obama bat at each other like crazed badminton players after a shuttlecock:

So Operation Chaos was born primarily for the purpose assuming Obama was going to be the nominee at the get go of this.  He needs to be bloodied up politically since McCain is not going to do it. Since the Republican Party is not going to be on the field in this way, somebody's gotta bloody up Obama.  The only person that can do it is Hillary, and she can't do it if she's not in the race -- and so the purpose was Operation Chaos was to keep her in the race and to have her bloody up Obama in the process of staying in the race.  I'm talking about politically. 

Well, it looks like the "Kossacks" (writers / readers at the Daily Kos, the largest Liberal blogsite) are realizing that here in NH in Congressional District 1, they have the same capability, except they want to dictate the outcome of a primary instead of merely prolonging it:

I am wondering if anybody on here lives in New Hampshire's first Congressional district represented by Democrat Carol Shea-Porter.  The reason I am asking is that new polls out show her beating one candidate (John Stephen), but trailing the other (former Rep. Jeb Bradley). 

See Politico

I am thinking that anyone who lives in this district should grab a Republican primary ballot on September 9th and vote for John Stephen, who is almost certainly the weaker candidate. 

OK folks, all you Republicans and Right leaning independents, you now have some knowledge if you do not want to keep Carol Shea-Porter as your Representative. Get out there and vote!

Im really surprised that nobody has thought of this yet on here.  Carol Shea-Porter is probably one of our most endangered incumbents and will need everything to break in her favor to win reelection.  She trails Bradley by six points, but leads Stephen by six.  If she faces Stephen in November, I think she will win.  If she faces Bradley, who held this seat from 2002 until she beat him in 2006, she will have an uphill climb.

We should call this our own "operation chaos", like what Republicans tried to do to us in the Democratic Presidential primary... New Hampshire does have an open primary, so I will encourage anybody who lives in the first district to grab a Republican ballot and vote for John Stephen on September 9th.

Well, it can work both ways...but I do believe that as the election comes neigh, we'll have the better candidates.

More details on the polls here.