 Prior to entering politics, Zinck was the head of the Dartmouth District 9 Citizens' association.On March 25, 2010, Zinck was suspended from the Nova Scotia NDP caucus over "persistent" expense irregularities.In making the decision, caucus chair Vicki Conrad stated that the government caucus could no longer trust Zinck, telling reporters "We decided to suspend him because members feel we do not have the necessary trust in his conduct as a member of this caucus."