The 2012 presidential election can change at the drop of a hat.  Watch CNN.com Live for all the latest news and views from the campaign trail.

Today's programming highlights...

1:20 pm ET - Obama talks trade - Before President Obama heads to Colombia for the Summit of the Americas, he stops by Tampa, Florida, to make remarks on the importance of U.S. trade with Latin America.

2:20 pm ET - NRA annual meeting - GOP presidential candidates Mitt Romney and Newt Gingrich join former candidates, lawmakers and activists in addressing the annual meeting of the National Rifle Association in St. Louis.

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