Sure, eventually. The memory of the people is short in our young country, and parties haven't had one constant ideological agenda throughout our history. During the end of slavery and the Civil War, the shoe was on the other foot. Lincoln was a Republican.
Will they get creamed in 2014? Probably if they keep this up, according to polls. Will they be gone for good? Nope.
I doubt they are really in danger of being creamed yet. But this isn't going to help, and they should be making big gains in a midterm.
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I think you are giving way too much credit to McConnell. He doesn't have that long of a leash with his primary happening.
If he is leading the charge for surrender, then he is going to become target #1 for the Senate Conservative Fund (aka Demint and Cruz and Redstate.com)
And I don't see any way that a short term CR or debt limit increase is through March. The House GOP will insist on a shorter term deadline so they can keep applying pressure to get entitlement cuts.
I would have agreed with you about McConnell's weakness a month ago, but lately its looked more like his Tea Party challenger is just too weak. The last poll I've seen had McConnell ahead by ~47 points -
McConnell poll shows big lead in primary
In contrast, the latest polls I've seen have him up only by ~4 points or so against his Democratic challenger, Alison Lunder-Grimes. I could well see him calculating that ending the shutdown is more of a political plus than a negative.
That said, I agree completely about the idea that he will get hammered by the Senate Conservative Fund. He just might be calculating that to be a positive for him at this point since his main threat is coming from the left right now.
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Also, just to be clear, the credit I give McConnell is for effectiveness. His personal power is quite limited because he is only the Minority leader. But he has consistently achieved outsized results with that power, and when he takes action he tends to be quite effective.
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Also, I should point out that despite the initial Washington Post story, McConnell appears to be operating more on the down low right now. There is very little in the media right now about the Senate effort, and the lead Washington Post story (which merges all of the storylines) has de-emphasized the Senate effort and buried it deep in the story.
That might indicate that I am personally out on a limb in thinking that it is an important development.