In 2007 Labour lost an election in Scotland for the first time in half a century and the SNP went on to form the Scottish Government. This book explains why. Based on a unique three-wave survey of the Scottish electorate, it can truly be described as the first full-scale Scottish national election study. As such, it is notable not only for its innovative methodology but also because theories and concepts are taken from the recent electoral studies literature and applied to Scotland. Other questions investigated include the impact of campaigning and of the party leaders (at both Scottish and British level) on the election outcome. In addition, for the first time in the UK context, a special study is made of the causes and consequences of rejected ballots - the large number of which at this election caused a media outcry. This book will be required reading for anyone interested in, involved in, teaching or studying Scottish politics. It will also be an important text for those concerned with UK politics in general and attract particular interest among students of elections, both in the UK and internationally.