(CNSNews.com) - The firestorm of liberal rage that scorched Sen. Trent Lott's political career nearly two weeks ago also has ignited criticism of at least four Republicans regarded as successors to the Senate Majority Leader. But some observers say a "weakened" and "responsive" Lott is more valuable to Democrats than any GOP replacement would be. People for the American Way (PFAW) issued a report Tuesday comparing the civil rights voting records of Republican senators Bill Frist (Tenn.), Mitch McConnell (Ky.), Don Nickles (Okla.), and Rick Santorum (Pa.) to that of Trent Lott. PFAW selected the four GOP senators because...