Washington (CNN) - A conservative group that attacked Barack Obama during the 2008 presidential campaign for his association with Rev. Jeremiah Wright is launching a new campaign against vulnerable Democratic members of Congress with the goal of linking them to House Speaker Nancy Pelosi and her "leftist agenda."
The National Republican Trust PAC announced Monday the creation of "The Pelosi Index," an online database that rates members of Congress according to how often they side with Pelosi on votes on touchstone issues, such as the stimulus package and health care reform.
Democrats who have lined up with House leadership more than 75 percent of the time - closer to the "Tyranny" end of the group's scale, as opposed to the "Liberty" end - are labeled "The Worst of the Worst."
Scott Wheeler, the executive director of the PAC, told CNN the new effort will be accompanied over the next 90 days by a $3 million television and radio ad blitz against several Democrats seeking re-election in 2010, with a specific focus on members who hail from districts won by John McCain in 2008.
Wheeler would not list every Democrat in the PAC's crosshairs, but he did name four who will be targeted by ads in the coming months: Florida Rep. Ron Klein, Virginia Rep. Gerry Connolly, Arizona Rep. Gabrielle Giffords and Arkansas Rep. Marion Berry.
"There are others that I think that can be put in a position to have to explain and defend voting for an agenda that is completely inconsistent with the values of their district," Wheeler said of other Democrats on the PAC's hit list.
He said the PAC group was still evaluating whether Alabama Rep. Parker Griffith - who switched parties to become a Republican in December - will be targeted or treated "as Republican who might start voting more conservatively."