Specter was in the Senate for 30 years, Kirk has been there 1 year. Give Kirk 30 years in the Senate and I can gurantee you he'll do more damage that Specter (he already did an enormous amount of damage during his decade-long career in the U.S. House)
As bad as Specter was, at least he was a reliable conservative on 1 or 2 issues -- Specter had an A rating from the NRA, for example. Kirk is a reliable conservative on NOTHING. In fact, Kirk is so liberal on guns that Jim & Sarah Brady of the "handgun control" crowd actually endorsed him over a Chicago machine Democrat for U.S. Senate!
I did say for now. Hopefully Kirk will NOT be in the Senate for 30 years.