Nominate her and risk this, Democrats:
Had the server 'scandal' and disclosure of turpitude on her part discredited her, she would lose the 2016 Presidential election badly -- maybe 419-119 as this map shows. She would win only the sorts of voters who would never vote for any Republican, which is about 40% of the vote.
Keep bringing up the server 'scandal' and Benghazi, and Republicans risk this mirror image:
419 electoral votes basically requires Texas, so I can't give a mirror image of the 419-119 Republican victory that you thought possible.