Freshman Sen. Marco Rubio (R-Fla.) was elected with strong Tea Party support, but he is not sure that forming a Senate Tea Party Caucus is a good idea.
Rubio is not expected to attend the group's first meeting on Jan. 27, but he went further in a recent interview, saying that the caucus could co-opt the grassroots conservative movement.
Even though the Tea Party movement had a tremendous affect on Senate GOP primary races around the country, the Capitol Hill group has only three members committed to attending its first meeting: Sens. Mike Lee (R-Utah), Rand Paul (R-Ky.) and Jim DeMint (R-S.C.)
Other senators elected with the help of Tea Party activists, such as Ron Johnson (R-Wis.) and Pat Toomey (R-Pa.) have also declined to join the caucus.
Rep. Michele Bachmann (R-Minn.) last year created a Tea Party Caucus in the House, which had nearly 30 members at the end of 2010.
But membership in the group might not become a litmus test for Republican lawmakers. Some conservative bloggers have echoed Rubio's concern about the caucus.
"When Representative Michele Bachmann spearheaded the Tea Party Caucus in the House, I had mixed emotions. When one person or a group of people claim to represent ideas, then the whole movement can be tainted by the missteps of the individual," Melissa Clouthier wrote at the conservative blog RedState in a post about Rubio's membership.
Rubio was an early underdog in the Florida Republican Senate primary behind Gov. Charlie Crist. But he eventually picked up momentum with the help of the Tea Party and drove Crist out of the race, and later the GOP. Rubio defeated Crist, who ran as an Independent, and Rep. Kendrick Meek (D) in the general election.
The Florida senator and conservative favorite said he would be joining the Senate Steering Committee, an existing group of conservative senators.
"Why do we need something in addition to the steering committee?" Rubio asked. "And there maybe a good reason. I'm curious to hear about that."