The battle between the Old Guard headed by Louis Waldman against a bloc of the Militant faction of Jack Altman with the "Progressive" group headed by Norman Thomas came to a head in the last days of 1935. DeWitt sided decisively with the latter grouping, breaking ranks with his long-time comrades of the Old Guard. DeWitt stood as a candidate for the New York State Committee of the SPA as part of the Progressive/Militant slate in the April 2, 1936, New York primaries and he won election in Queens County Assembly District 4. The Progressive/Militant bloc won a comfortable majority of seats on the State Committee in this election.