On November 7, 2006, Pombo was defeated by McNerney. McNerney got 53.1 percent of the vote to Pombo's 46.9 percent. Apart from prevailing national Democratic trends and the corruption allegations dogging him, Pombo was also the number one national target of environmental groups. Washington, D.C.-based Defenders of Wildlife spent more than $1 million on the race and commissioned the first poll in 2005 that showed Pombo to be vulnerable in his re-election bid. The Sierra Club sent over 300 volunteers and organizers to work for McNerney in the final weeks of the campaign. The group, allied with the League of Conservation Voters, also aired issue ads attacking Pombo. Pombo and Heather Wilson were the two Representatives targeted by the Humane Society, which spent over $100,000 in Pombo's district, including organizers. Since Pombo left office, no other Republican has represented a significant part of the Bay Area in Congress.