Fridays at 8 p.m. and Encore Sundays at 10 a.m. on KPBS TV / PBS App. THIS WEEK: This has been the most dramatic week in American politics since the January 6 riot. Following his attempted assassination, former President Donald Trump has solidified the Republican Party and energized his base by choosing Senator JD Vance as his running mate. For President Biden, however, his party is split over his re-election bid, while his COVID diagnosis has taken him off the campaign trail at the critical moment he is trying to convince Democrats he can beat Trump in November.