Republican presidential candidate Marco RubioMarco RubioFive takeaways from Florida Senate debate The Trail 2016: Comeback in the works? US abstains from UN resolution on Cuba embargo for first time MORE said that rival Donald TrumpDonald TrumpHouse Republican group raised more than M in October Five takeaways from Florida Senate debate Chaffetz says he'll vote for Trump MORE is not a true conservative, criticizing the front-runner for not attending the Conservative Political Action Conference.
"This matters. Either the ideas behind conservatism matter or they do not. And if they do not, then it's fine, but I believe they do."
Rubio said candidates can't just ask for votes because they're "angrier."
"It is not enough to say vote for me because I am angrier and over-the-top and I'm going to do and say things no one else is going to do," Rubio said.
"I get that anger and frustration, I really do," he added.
Rubio continued to name many young conservative leaders in the country — calling out Trump for not having the same values and saying they grew up during the time of former President Ronald Reagan.
"And Ronald Reagan looked and acted nothing like Donald Trump," he said.