GOP 2016 contenders: Who's in, who's out at CPAC

Since then, Paul has said he's "seriously" considering a bid in 2016, and CPAC represents an opportunity for the Kentucky senator to appeal to his party's most fervent conservatives. Libertarians have also made a strong showing at CPAC in the past, often in support of Paul's father, former Republican presidential candidate Ron Paul, R-Tex.

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