Those persuasion skills were key to Ms. Kolkhorst marshaling support for a partial two-year moratorium on private toll roads. The bill could get lawmakers' final blessing today. The Brenham Republican has emerged as a central figure in the Legislature's efforts to slow down the privatization of Texas roads. She has persuaded nearly all of her 149 House colleagues to back the moratorium, which excludes most North Texas toll projects. Ms. Kolkhorst, 42, has parlayed a blend of persistence, fearlessness, smarts and country charm into a more visible role in Austin. In addition to leading the toll road freeze, she has...