D.C. Council Chairman Vincent Gray would defeat Mayor Adrian Fenty in a head-to-head Democratic primary, according to poll results released Monday that show Fenty’s approval rating at 43 percent.

Asked by D.C.-based Clarus Research whether they’d like to see Fenty re-elected, only 34 percent of the 501 registered District voters offered the mayor their support, while 53 percent called for a new chief executive. Pollster Ron Faucheux, president of Clarus, deemed Fenty’s base “dangerously weak for an incumbent going into an election year.”