“Primary election season is still young, but the liberal wing of the Democratic Party is already celebrating,” reported the Associated Press on Thursday. “Democratic primary voters have chosen decidedly liberal candidates in several closely watched congressional primary elections, a sign that the left is driving much of Democrats’ enthusiasm and may be winning the tug of war with moderates over the direction of the party.”

There’s some dispute as to whether this primary season has definitively proven progressives the winners of that tug of war, though that theory seems to have plenty of supporters. But there’s no question they’ve come out on top in some key races, and primary voters’ preference for progressives could have unintended consequences.