Rick Santorum, trying to keep his presidential hopes alive despite increasingly long odds, is looking for the political equivalent of a Hail Mary pass from Texas Republicans. A group of Texas party activists, led by Santorum supporters, are waging an uphill battle to change the rules of the May 29 primary so that whoever wins would get all 152 delegates up for grabs in the contest. The activists say they have enough support to force an emergency meeting of the State Republican Executive Committee, though major hurdles loom beyond that. The Republican National Committee would have to approve the last-ditch move to change the delegate selection process because of the late date of the request, officials say. An RNC official in Washington, speaking on condition of anonymity, said Thursday that would be highly unlikely. Later, the RNC communications director, Sean Spicer, said there is “no basis” for a change and that Texas would “remain a proportional state,” according to a posting on Twitter from The Washington Post. The change might also require approval from the U.S. Department of Justice.