Wisconsin Democrats chose a middle path – will it lead to victory in November?

Democratic socialist Francesca Hong fell just short as David Crowley strives for unity for the general election

Francesca Hong, a democratic socialist, was on course to win the party's nomination for Wisconsin governor on Wednesday by a clear margin, according to the polls - presaging the latest in an extraordinary wave of leftwing victories across the country, challenging the party's establishment.

It was not to be. In a photo finish after a messy campaign, David Crowley eked out a win by a few thousand votes over Hong, raising questions over the limits of the progressive movement that has swept through Democratic contests in recent months.