One day after former Vice President Dick Cheney weighed in on behalf of Kay Bailey Hutchison, another endorsement in what is shaping up to be a fascinating Texas gubernatorial primary. Today, it's Gov. Haley Barbour (R-Miss.) endorsing the incumbent, Rick Perry.

The Austin American-Statesman reports the Perry and Barbour, chair of the Republican Governors Association, will be raising money today in Fredericksburg and Dallas. Those fundraisers will benefit the RGA, but Barbour's own endorsement of Perry will come later and be his alone, not the organization's.

RGA spokesperson Mike Schrimpf said the organization does not pick sides in gubernatorial primaries. Something of a distinction without a difference, perhaps.

As for Cheney's endorsement of Hutchison, Perry said on a local radio station this morning: "I think I'd stick with Sarah," referring to Sarah Palin, who has backed him. His spokesman was more blunt: "It's not surprising, considering they worked in Washington together for so many years."