Party worries a victory by Maga darling Ken Paxton over John Cornyn would open door to Democrats in red stateFour-term Republican US senator John Cornyn is fighting for his political life against Texas attorney general Ken Paxton, in a bitter primary contest that will likely end in a runoff.As polls began to close across the Lone Star state on Tuesday evening, national Republicans were openly fretting that a victory by Paxton, a scandal-plagued conservative culture warrior who is a darling of Do...