Old Sarum was from 1295 until 1832 a parliamentary constituency of England, Great Britain, and the United Kingdom of Great Britain and Ireland. It was a so-called rotten borough, with an extremely small electorate that was consequently vastly over-represented and could be used by a patron in gaining such undue influence. The constituency was on the site of what had been the original settlement of Salisbury, known as Old Sarum. The population and cathedral city had moved in the 14th century to New Sarum, at the foot of the Old Sarum hill. The constituency was abolished under the Reform Act 1832.