You need to remember in November 2010 most of those things mentioned on your list were present and the Democrats still held the Senate.
You need to remember that the Dems got shellacked in Nov 2010, it was a bigger loss than 1994! And they were defeated because of the tea party and the ineptness of Obama, we may have even won the Senate if it wasn’t for RINOs dumping on Chrisitne O’Donell and refusing to fund her race. They got their asses handed to them, man the glass will always be half empty for you huh?
Or could it be that O’Donnell, Angle, Miller, just were not that great of candidates? If I recall correctly, they kind of deserve some of the blame. Like the “I am not a witch” commercial, or Angle’s “I don’t know that all of you are Latino. Some of you look a little more Asian to me” to a bunch of kids, or Miller using his private bodyguards to arrest a supporter. These were just stupid mistakes. As far as my glass it always overflows, I am a Jerseygirl.