See my post 173. She was on Cavuto today spearheading an effort to shut down B of A's bank services for illegals nonsense.
I don't know hardly anything about Congresswoman Blackburn. Judging from the front page of her website it seems she and I share some of the same priorities. But to be honest I think it would be an extreme longshot to run two Representatives of the House on the same ticket(even if they were both exemplary human beings). Enter someone with the 'star power' as Kevmo put it like a Secretary Rice and you could be going places.
As for the scenario of Bush dumping Cheney to give a Republican a good platform to run for President I don't see that happening. If Bush did decide to dump Cheney I think the person he would most likely replace him with would be Condi Rice and she already has a platform should she decide to run.