Key US Primary Races Take Shape Tuesday's primary elections in six US states have left the nation questioning what exactly is happening to traditional party lines.
The Democratic Senate primary in Minnesota, where Lieutenant Governor Peggy Flanagan took down Representative Angie Craig, appears to be a clear example of progressive momentum.
However, scratch beneath the surface and you'll find a more complex story at play. The Wisconsin Republican gubernatorial primary remains too close to call, with several candidates vying for the top spot.