The Democratic Party is in a deeper ditch than the Republican Party

[fredamae]

40. Because of the Fun Filibuster

exercises of McConnell...Dems only had a filibuster proof majority for about 70 or so Days out of that two years and even then....there was No guarantee that the slim majority would all get in line to get those 60 votes to overcome the "new 60 vote majority rule" imposed by the GOP, in support of anything.

Kennedy died...scott brown came in...and that was the end of the Sen getting Anything done.
The house produced a Lot while Dems had the majority only to watch those bills filibustered to death by the GOP Sen...that really has been "in control" through the abuse of the filibuster.
And then...we cannot ignore the effects of State's Gerrymandering Districts. The numbers don't lie. Dems get More votes and still Lose. Factor in the ongoing attacks on the VRA...and that, as well factors in.

There are a lots of problems behind the Dems demise but the one controllable factor: Dem candidates don't excite and inspire us to get noisy and fight this crap. Instead, many have been driven away, do continue to leave and Dems will continue to lose willing participants faster because of RW Conservative Lite Third Way Think Tank Policies than the GOP base is dying off from old age.
All in my opinion...of course.