By the numbers: Tuesday's primary election results

Pennsylvania voters
Pennsylvania voters voting in yesterday's primary election. Photo: Mark Makela/Getty Images

The results of last night's primary elections in Pennsylvania, Oregon, Idaho and Nebraska produced few serious surprises but did set up some potentially historic storylines ahead of this fall's general election.

The big picture: The second big primary night of the midterm election cycle was a good night for incumbents from coast-to-coast and a great night for women in Pennsylvania, where an altered congressional map could pave the way for big changes.