Just mention Steelers and your blog hits go up.  So, in a shameless bid to drive traffic to the new, improved Early Returns site, we bring you the word from CQ Politics that  Rep. Tom Rooney, R-Fla., faces a clear field for re-election after the withdrawal of a potential Democratic challenger.  Attentive readers of ER will remember that the South Florida lawmaker, who always roots for the Steelers over the Dolphins, is the grandson of Steelers' founder Art Rooney and the nephew of Ambassador Dan.