The Wisconsin gubernatorial primary election is underway, with razor-thin margins reported in key races across the state.
In the Democratic primary, Francesca Hong and David Crowley are locked in an exceptionally tight contest, separated by only a few hundred votes.
Separately, a Republican candidate, described as President Trump's 'firewall' against socialism, has secured a ticket to the general election. This is a developing story and will be updated as details emerge.
