On June 25, 2015, Justice Lisa Cameron, calling Del Mastro's crimes an "affront" to Canadian democracy, sentenced him to a month in jail, four months' house arrest, and 18 months' probation. She also banned him from holding any public office while serving his conditional sentence, and from running federally for a period of five years. Del Mastro appealed the conviction. On 13 September 2017, the Ontario Court of Appeal upheld his convictions, dismissing his appeal. Leave to appeal to the Supreme Court of Canada was refused on April 5, 2018.