On December 22, the Libertarian Party of Connecticut filed a federal lawsuit against the law banning out-of-state circulators. Libertarian Party of Connecticut v Merrill, 3:15cv-1851. The case was assigned to Judge Janet C. Hall, a Clinton appointee.

Similar bans have been struck down in Arizona, California, Colorado, District of Columbia, Illinois, Kansas, Michigan, Ohio, Oklahoma, Pennsylvania, Virginia, and Wisconsin. Three times one of the states that lost such a case asked the U.S. Supreme Court to hear its appeal, but all three times the Supreme Court refused. The states that asked for U.S. Supreme Court review were Arizona, Illinois, and Virginia.

Other states that still ban out-of-state circulators for candidate petitions are New York, New Jersey, and South Dakota. However, South Dakota permits out-of-state circulators for petitions to place a new party on the ballot.