Gov. Greg Abbott, after trailing potential challenger Matthew McConaughey in the spring, has rebounded and now has a slight — but not statistically significant — lead over the movie star in a hypothetical matchup in next year’s race for governor, according to a poll released Sunday by The Dallas Morning News and the University of Texas at Tyler. Abbott, a two-term Republican, is favored by 39% of Texans of all political stripes, while McConaughey, who hasn’t picked a political party or even committed to running, draws backing from 38%. Nearly a quarter of Texans said they’d vote for someone else... While no major Democrat has announced against Abbott, former El Paso congressman and presidential hopeful Beto O’Rourke hasn’t ruled out another bid for statewide office. If O’Rourke tosses his bandanna in the ring, he starts out behind: While about two-thirds of Democrats support O’Rourke, 78% of the more numerous Republicans back Abbott. And Abbott’s edging O’Rourke among independents (35%-28%), for an overall lead of 45%-33% in their general-election showdown.