At least not according to actual Republicans:
Despite efforts by the Obama political team and its surrogates to link Rush Limbaugh to the Republican Party, just 11% of GOP voters say the conservative radio commentator is the party’s leader.
Eighty-one percent (81%) of Republican voters disagree and 8% are undecided in a new Rasmussen Reports national telephone survey
So, you know, can we please stop talking about this already ?

March 4th, 2009 at 1:33 pm
Did you see the question they asked?
“Rush Limbaugh is the leader of the Republican Party. He says jump, and they say how high.”
That seems intentionally worded in a way that would discourage Republicans from identifying Limbaugh as their leader.
March 4th, 2009 at 1:35 pm
Yes ? And ?
Would you think it a good thing if Republicans were stupid enough to think Limbaugh WAS the leader of their party ?