In terms of parliamentary representation, Chadderton after the Reform Act 1832 was represented as part of the Oldham parliamentary borough constituency, of which the first Members of Parliaments (MPs) were the radicals William Cobbett and John Fielden. Winston Churchill was the MP between 1900 and 1906. Constituency boundaries changed during the 20th century, and Chadderton has lain within the constituencies of Middleton and Prestwich (1918–1950) and Oldham West (1950–1997). Since 1997, Chadderton has lain within Oldham West and Royton. It is represented in the House of Commons by Jim McMahon, a member of the Labour Party.