I think perhaps if a lot of Dems in otherwise GOP leaning districts manage to win as a fluke this year, they will be vulnerable next time. But it still would be an uphill climb for Repubs to take back control. The Dems of course will fight dirty and do everything they can to keep control another 40 years.
If they win though, at least there are some bright spots. The parties will remain competitive, and presumably the Demo majority would not be that big. This will be a change from that dark period from 1958 to 1994 where the Dems never had fewer than 243 seats. The GOP could hardly come close.
In addition, 12 years in the majority isn't bad. If I'm not mistaken, since the FDR era began the Demo dominance of Congress, up until 1994, the GOP only took control twice in 1946 and 1952. Both those times their majority lasted a mere 2 years. Had the 1994 election been a fluke, and the Dems came back in '96, it would have been a total disaster. But at least now they have improved their standing, created a stronger grass roots organization, and are much better at getting out the vote. So with luck and hard work, even if we are in the minority again in 2007, Repubs are in a better position than they were in previous generations.
Tnc, it might help the GOP Presidential candidate in 2008 to have Botox Nancy running the House, but in the short term it hurts America. We are not talking about a sane leader here. she will bow to the ACLU and make it tougher on wire tapping etc.. and will kill the morale of our troops along with anti-American John Conyers.
There is no silver lining to having appeasers in charge in a war on terror and North Korea.