To pander to his audience without meaning any of it.
He's of course applying that to politics, and even the Teapublicans can tell, despite having turned their bullshit detectors so low they can't see the arrant bullshit of the other candidates. Krugman on Rmoney:
Should those who don’t share the right’s faith be comforted by the evidence that Mr. Romney doesn’t believe anything he’s saying? Should we, in particular, assume that, once elected, he would actually follow sensible economic policies? Alas, no.The difference between Bain's takeovers and a political campaign is that takeovers end quickly. The affected workers and executives learn by the end that you lied to them, but you don't have to convince them of anything further, since you already own their asses. Not so the Teapublican nomination.
For the cynicism and lack of moral courage that have been so evident in the campaign wouldn’t suddenly vanish once Mr. Romney entered the Oval Office. If he doesn’t dare disagree with economic nonsense now, why imagine that he would become willing to challenge that nonsense later? And bear in mind that if elected, he would be watched like a hawk for signs of apostasy by the very people he’s trying so desperately to appease right now.
The truth is that Mr. Romney is so deeply committed to insincerity that neither side can trust him to do what it considers to be the right thing.