I'm calling Pence the dark horse Republican whose potential to pull an upset in the primary is the most overlooked.
I'd probably agree with that. Not really sure what Pence's intentions are. From what I've read, he no longer seems interested in climbing the leadership ladder in the House, even if the GOP wins the House this November. He may very well opt out of any leadership position in the next Congress, regardless of which party wins control. He'll probably run for either president, governor or senator (Lugar's seat, if Lugar retires). I honestly have no idea which of those he goes for.
I'm going to guess either Senator or Governor. He's only 51, so really he could be setting himself up for a run in 2016 or 2020 (depending on who wins 2012). A lot of it is dependent on what Daniels does.