Steve Munisteri, the head of the Republican Party of Texas, will chair Rand Paul's to-be-announced Texas presidential campaign, a high-profile endorsement that arrives as Paul headlines two of Texas' largest Republican fundraising dinners this weekend. "The senator has a good number of supporters in the state, a substantial portion of the activist base, and he's maintained his ties to Texas since the days he grew up and went to college here," Munisteri said.