January 2010 hypothetical polling showed Gray in the lead by 4 points ; a Washington Post poll of August 29 found Gray with a 17-point lead ; a Clarus poll conducted September 7 gave Gray a 7-point lead ; and a Public Policy Polling survey sponsored by WAMU-FM radio and Washington City Paper showed an 11 percent lead for Gray on September 8 .
A Clarus poll conducted September 7 gave Gray a 7-point lead among likely voter , while a Public Policy Polling survey sponsored by WAMU-FM radio and Washington City Paper showed an 11 percent lead for Gray .