The left and the middle continue to battle in Democratic primaries for governor in Wisconsin and Senate in Minnesota. In South Carolina, all eyes are on Darline Graham.
Wisconsin and Minnesota primaries next to feature clashes between progressive and establishment Democrats PBS WisconsinMinnesota primaries could mark change of path for Democrats and Republicans The GuardianProgressives face latest test in Midwest with Hong, Flanagan The HillWisconsin weighs a democratic socialist governor and other key races to watch in Tuesday's primaries CNN
