At birth, Abbott was a British citizen by birth in the UK and by descent from his British-born father. He did not hold Australian citizenship from birth, as at the time Australian citizenship by descent could only be acquired from the father. Abbott became a naturalised Australian citizen on 26 June 1981, apparently so as to become eligible for a Rhodes scholarship. On 12 October 1993, he renounced his British citizenship to be eligible to run for parliament under section 44 of the constitution.