That was decades ago. There were generations of conservative yellow dog DemocRATS in Texas up until the 1990s. As the DemocRAT party veered more and more to the left beginning in the 1960s, most of the yellow dog DemocRATS left the DemocRAT party.
I've spoken to liberal friends in Texas practically in tears asking what happened to all the Democrats in the state? Dumbheads. They were conservative Democrats (many of them racist by today's standards, of course).