Are you seriously suggesting that there are no unreasonable Dems??
Really this is just illustrating my point, and her feelings.
...which is a good point.
It's not as if the "Blue Dog" caucus (somewhat more moderate as opposed to liberal) within the House is very highly thought of by Dem party leadership. Nor, despite the 90's successes of Bill Clinton, was the now-defunct Dem Leadership Council (which strove to push the Dem party back towards the middle and not let it drift too far leftward) highly thought of...by virtually anyone in the Dem party orthodoxy.
As this NPR link from 2011 shows, when the writer said that the DLC had many enemies inside the dem party, due to its centrist tack and sometimes loud criticism of liberal ideas/ideals, he assumed there would be no shortage of dems lining up to dance on its grave (the DLC closed in 2011). He then had a moment of doubt, wondering if the feelings would be that intense. He then phoned the founder of the Daily Kos to see if that's how he felt...it was...and in fact the writer says Mr. Moulitsas wanted to know where the grave was so he could dance on it.
It's a huge country. Some areas are indeed deep red and others are very deep blue, but both parties set themselves up for electoral sweeps when they try to pretend that purple doesn't exist.
I doubt this trend will change anytime soon, due to the fact that Congressional redistricting favors incumbency protection above all else (for both parties), partisans of one party think it's always the other party that needs some moderates, and the fact that over the past 35 years both parties have moved to their respective left and right...to find the bigger and bigger bucks. I think it was John Ashcroft who once had a saying that the only thing you find in the middle of the road are dead skunks and worn-out political moderates. If I'm correctly crediting him with it - seems fairly apt.