Success for progressives in Texas while Trump ally suffers major blow

Attorney general Ken Paxton heads to nomination runoff against Jeb Bush's son while progressive Jessica Cisneros celebrates runoff

Progressive Democrats notched victories in two of Texas's congressional primary races on Tuesday while Ken Paxton, one of the most prominent Republicans in the state and Donald Trump ally, suffered a major blow.

In the most closely watched congressional primary, Jessica Cisneros, a progressive Democrat, forced a runoff against Henry Cuellar, a nine-term congressman who is one of the most conservative Democrats in the US House. (Texas races go to a runoff if no candidate receives more than 50% of the vote.)