Santorum is the favorite to win Saturday's Louisiana primary based on recent polling. Even with a win, it's hard to see how Santorum will gain much on Mitt Romney's delegate lead, since both are likely to receive some delegates.
President Obama spent the past two days traveling the country, touting his all-of-the-above energy strategy. He is promoting solar power and wind power, but says brain power — as in American ingenuity — is also key to curbing the nation's dependence on foreign oil.
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