Mitt Romney on the trail

Mitt Romney, the former Massachusetts governor and unsuccessful 2008 candidate, has a lot going for him in his 2012 presidential run: He has worked hard to establish his conservative credentials following his relatively moderate tenure as Massachusetts governor, and he has consistently scored among the top two contenders in GOP presidential polls.

But Romney has liabilities, too: His Mormon faith remains a potential roadblock to some voters, and some see him as a political opportunist. Plus, the health care bill he signed into law in Massachusetts is already proving to be a political problem -- especially since it looks eerily familiar to the national law President Obama passed in 2010.

In the following slides, CBSNews.com takes a look at Romney's recent time on the campaign trail.

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