Public sentiment shifts sharply against free trade in the March 2016 Michigan primary for the U.S. presidential election, with candidates saying trade agreements do not take into account the interests of American manufacturing workers making large gains. Between 1999 and 2010 public sentiment shifted against trade agreements for all age, education and income groups. A study by Autor, Hanson and Dorn showed loss of 5.6 million jobs in the last decade and large trade deficits, and demonstrated the effect by counties in the U.S. most hurt by trade policies.