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CPAC has long been a stopping point for GOP presidential aspirants. Rubio, who has spoken at previous CPACs in previous years, is seen as a likely contender for the nomination.

"My friend Marco RubioMarco RubioAt CPAC, Trump lashes out at media Conquering Trump returns to conservative summit Rubio brushes off demonstrator asking about town halls MORE has quickly become one of our nation's most prominent conservative leaders," American Conservative Union Chairman Al Cardenas said in the release announcing the news. "Sen. Rubio's participation will serve as motivation to CPAC attendees and conservatives across the country to take action and bring our country back on track."

Rep. Paul RyanPaul RyanEx-Trump adviser: Ryan should be replaced if he can't execute on ObamaCare If Democrats want to take back the White House start now GOP grapples with how to handle town halls MORE (R-Wis.) is already scheduled to speak at the event, as is former Sen. Rick Santorum (R-Pa.).

The three-day event, in its 40th year, will be held in mid-March.