claim: "let me say that i don't think (bernie sanders has) had a single negative ad ever run against him."
author: hillary clinton
evidence_1: may 22, 2016 ... before we will have the opportunity to defeat donald trump, we're going to have  to defeat secretary clinton. chuck todd: this morning my sit down with hillary  clinton. on bernie sanders. sec. hillary clinton: let me say that i don't  think he's had a single negative ad ever run against him. chuck ...
evidence_2: may 22, 2016 ... when host chuck todd pointed out that sanders fares better than clinton in head -to-head matchups against presumptive gop nominee donald trump, clinton  suggested sanders hasn't been vetted as thoroughly as she has ... "let me say  that i don't think he's had a single negative ad ever run against him.
evidence_3: may 22, 2016 ... facing mounting pressure to end his campaign for the democratic presidential  nomination, bernie sanders has instead escalated his feud with democratic ... “ let me say that i don't think he's had a single negative ad ever run against him,”  clinton said, rebutting, in essence, sanders' reliance on polling that ...
evidence_4: donald trump · "an analysis showed that bernie sanders would have won the  democratic nomination if it were not for the super delegates." ... "let me say that i  don't think (bernie sanders has) had a single negative ad ever run against him."  ... says bernie sanders "has been largely a very reliable supporter of the nra.".
evidence_5: nov 3, 2016 ... “the clinton campaign has paid people to disrupt, violently, our rallies, and to  incite absolute total bedlam.” read the fact ... “these vicious claims about me of  inappropriate conduct with women are totally and absolutely false. ..... “i don't  think [bernie sanders] had a single negative ad ever run against him.”.