The party was one of the three main Scottish political parties to join together in the Better Together campaign opposing Scotland becoming independent in the 2014 Scottish independence referendum. Although a Conservative majority government was returned in Westminster in the 2015 general election, David Mundell remained their only MP elected in Scotland and was appointed Secretary of State for Scotland. He replaced Liberal Democrat incumbents who served during the 2010–15 Coalition government. The UK Government set about implementing the recommendations of the cross-party Smith Commission.