Hard to say that.
I think they would make a strong pairing in 2012. Which actually heads the ticket could be decided down the road. They could agree to let the voters decide based on primary performances while making it known they would be partners either way. It would be unique in the history of politics to form a team so early. We are in unique times.
While politically I think I am more aligned with Bachmann, I suspect Perry would capture the top. Some of the advantages this partnership could offer:
Perry is strong with traditional conservatives while his secession talk endeared him to Tea Partiers a bit. He has more executive experience than any modern President save maybe Eisenhower. Even the Northeast Establishment would probably accept him. And he bought me a beer at El Arroyo in Austin at the 2010 RedState Gathering.:)
Bachmann is probably the current Tea Party favorite. I suspect that traditional conservatives are not her biggest fans. She has on more than one occasion castigated her own leadership publicly. She has practically n0ne of the negatives Palin has in terms of polling.
There are unanswered questions here like “will Perry get in?”
Such an early pairing would send a clear, “this ain’t the usual politickin message.”
I think it would also push practically every other Republican out of the primary as the contest would quickly become about which of the two would head the ticket with people lining up on either side of the two instead of watching the multitude divide all of the conservatives and Tea Partiers and thus paving the way for a RINO like Romney to win.