(1) McConnell is too old. He will be 72 next year. It's clearly time for him to step down and let some new blood enter.
(2) The Tea Party was largely formed out of frustration with Republicans who continuously compromised, groveled, and pissed away any principles under the ridiculous notion of "bipartisanship." Republicans are supposed to be the opposition party, not working hand-in-hand with the enemy.
(3) There would be no Tea Party if Republicans just advanced conservative principles. There would be no Ted Cruz or even Sarah Palin. The GOP won landslides in 1984, 1994, and 2010 by running as CONSERVATIVES.
(4) How many moderate Republicans have actually won elections? The lone exceptions were Eisenhower, who was a popular WWII general, and Bush I who ran on Reagan's coattails. Dewey, Bush I in 1992, Dole, McCain, and Romney all got creamed. Even Bush II won, but only squeakers.
Hence the Term "Uniparty"
They are all members of the party of Government.