Who is the leader of the Republican Party?

So Rachel Maddow is spending a lot of time asking who the national leader of the GOP is after George W. Bush, as if this is some sort of crisis for the Republican Party. Hint: It isn't. The party that does not hold the White House does not have a national leader, regardless of which party it is. It wasn't a crisis for the Democrats to not have a national leader from 1981-1992 or from 2001-2008, it wasn't a crisis for the Republicans to not have a national leader from 1993-2000 or from 2009-2012 and it isn't a crisis now.