On May 10, 2017, Stallcop announced that he had changed his voter registration from Democrat to Libertarian. In a speech given on the steps of the New Hampshire State House, Stallcop said that Libertarian Party was a better fit for those of his views, which he described as classically liberal and civil libertarian. Stallcop also cited his experiences attending the Dakota Access Pipeline protests in North Dakota. Stallcop also said he was frustrated by criticism over his vote to kill legislation to increase the minimum age of marriage to 18 years old and his vote to allow the carrying of concealed guns without a permit.