By the 1980s, population growth meant that the constituency was considerably oversized, with one of the largest electorates in England. In the 1983 boundary revisions, which for the first time reflected the local government boundary changes of the 1970s, the size of the Maidstone constituency was considerably reduced. The area to the north-east of the town, and two wards of the town itself, were moved into the new Mid Kent constituency; as these were strongly Conservative wards and there had been a Liberal surge in the area around the time the Liberal-SDP Alliance was formed, the Alliance had some hopes of making a breakthrough in the revised constituency. However, they could only cut the Tory majority to a little over 7,000 in 1983, John Wells taking over half the votes.