NOBODY...
Nobody has said she does not have a right to run.
As has Rove, and the rest of the DC Republicans. Writing articles telling a conservative (in various ways) “how dare you believe you are qualified to run for President...you undereducated snow-billy hick”.
And various Republican blogs, forums, and their (presumed Republican posters)....telling supporters of this possible conservative candidate that they are cultists, loons, wack-jobs, rabid, koolaid drinkers, etc.
Not the Republican Party's finest hour.
And they have probably lost a good 20% of their Republican base members.
Of course...the Republican Party will say good riddance...(finally some honesty).
It has been implied by many that she does not.
I love her and want her to run and win. And if she runs, wins the nomination and loses, I will still love her and be glad she ran.