From Eric Dondero:

Two very interesting findings in a new poll released by liberal-leaning Public Policy Polling for the Texas Republican Primary for Governor. First, the overall numbers, 39% for Rick Perry, 28% for Kay B. Hutchison and 24% for Debra Medina.

But it seems Hutchison's main problem is covincing Texas Republicans that's she's conservative enough. From PPP:

while Hutchison has a commanding 49-29 lead over Perry with moderate voters, she is in last place with conservatives. Perry leads the pack at 42% followed by Medina at 25% and Hutchison at 23%. 76% of likely primary voters are conservatives to only 20% who are moderates.

While a run-off appears increasingly likely, by these numbers it's clear Medina's mostly hardline Ron Paul-style Constitutionalist supporters would deliver the win to Rick Perry. Continuing:

Medina supporters say their second choice is Perry by a 43-39 margin over Hutchison, suggesting that if Perry does win by ten points but still end up in a runoff Hutchison's prospects for gaining ground on him are not that strong.