By GottaLaff
Okay, so here’s a sign that Arlen Specter may really be sweating the looming challenge from netroots hero Joe Sestak: Specter, a longtime Republican until this year, is considering making an appearance at Netroots Nation next month. [...]Meanwhile, Sestak adviser Joe Langdon says his boss will be there. For Specter to attend Netroots Nation and take questions alongside Sestak would be a real sign of the times and make for some good — and very valuable — political theater.