It was pretty much in keeping with history. No Liberals were voted out, only Republican-Lite in states that Obama didn't win, anyway, except for CO.
NC
AR
LA
KY
GA
AK
All of these Senators/Candidates were Blue Dog Democrats who ran from Obama and his policies, which is why they lost.
OTOH, Jeane Shaheen embraced Obama and his policies and won.
So it's not a repudiation of Obama in any way. It's a repudiation of Democrats trying to distance themselves from all the success of the Obama terms, in an effort to endear themselves to wingnuts, while alienating their base.