How weak a candidate is Hillary?
Everybody but Ted Cruz beats Hillary Clinton in Minnesota, according to a Survey USA poll done for KSTP Television.
Nate Silver rated Survey USA as one of the best polls in 2010, and more in the middle among all pollsters in 2012. It does automated surveys.
Via Real Clear Politics, here are the Minnesota poll results:
Keep in mind that Obama won Minnesota by 8% in 2012, and Republicans have not won the state in a presidential election since 1972.