The Economist asks...

..."So, Mitt, What Do You Really Believe?" 

From the piece (my emphasis):

When Mitt Romney was governor of liberal Massachusetts, he supported abortion, gun control, tackling climate change and a requirement that everyone should buy health insurance, backed up with generous subsidies for those who could not afford it. Now, as he prepares to fly to Tampa to accept the Republican Party’s nomination for president on August 30th, he opposes all those things. A year ago he favoured keeping income taxes at their current levels; now he wants to slash them for everybody, with the rate falling from 35% to 28% for the richest Americans.
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But competence is worthless without direction and, frankly, character. Would that Candidate Romney had indeed presented himself as a solid chief executive who got things done. Instead he has appeared as a fawning PR man, apparently willing to do or say just about anything to get elected. In some areas, notably social policy and foreign affairs, the result is that he is now committed to needlessly extreme or dangerous courses that he may not actually believe in but will find hard to drop; in others, especially to do with the economy, the lack of details means that some attractive-sounding headline policies prove meaningless (and possibly dangerous) on closer inspection. Behind all this sits the worrying idea of a man who does not really know his own mind.
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Mr Romney may calculate that it is best to keep quiet: the faltering economy will drive voters towards him. It is more likely, however, that his evasiveness will erode his main competitive advantage. A businessman without a credible plan to fix a problem stops being a credible businessman. So does a businessman who tells you one thing at breakfast and the opposite at supper. Indeed, all this underlines the main doubt: nobody knows who this strange man really is. It is half a decade since he ran something. Why won’t he talk about his business career openly? Why has he been so reluctant to disclose his tax returns? How can a leader change tack so often? Where does he really want to take the world’s most powerful country?