1) RP is a candidate who's polled 1-3% this campaign. He continues (among the GOP and especially conservatives) to be an 'also ran'. His support among hard core GOP conservatives is NOT going to rise.
2) Most of his recent popularity has been through Democratic fringe elements seeing his message about leaving Iraq as a way to get a wedge into the GOP nomination process. And Ron Paul has done little or nothing to discourage this interest.
3) Because of this, Should Ron Paul become a 3rd party candidate (he says no), he will be more of a draw from the Democrat candidate than from the Republican; that is unless the GOP is foolish enough to nominate a Rudy Giuliani.
As for his 'objective' above, I have my doubts. I'm more pragmatic. He likes the limelight and attention, and sees it as a way to build a relatively decent amount of funds (relative to his past history). But that's just me.