Didn't what?

Abandon their base?  Of course they did - every analysis admits it....including her campaign and her husband, who warned her about it several times.  I have posted many sources concerning that lately.  She concentrated on the big money friends like Hollywood and the Southampton crowd....concentrated on the big cities and women....and ignored the white blue collar workers traditionally Democrat.  She blew off campaigning in the Rust Belt - didn't even go to Michigan until it was too late.  

Yup.  Abandoned her base.  And they knew it and responded.