The 2010 general election was the most eagerly awaited contest in Britain since 1997. With opinion polls showing a closing gap between the parties, the result was uncertain right up to polling day. In the end, the election was particularly noteworthy for three reasons. First of all, there were televised debates between leaders of the three largest parties. This idea has long been called for, but for a variety of reasons they had not occurred in Britain until 2010. Now they are here, they are almost certainly here to stay. Secondly, the election led to the end of thirteen years of Labour rule. Just as the 1964 and the 1997 elections had delivered the final blows to long-standing one party government, so 2010 did the same. What made 2010 particularly significant however was that, unlike 1964 or 1997, no single party assumed the reins of power. Thirdly, although the Conservatives ended up as the largest party by some margin, they were still some twenty seats short of a majority of just one. Not since the election of February 1974 had the result failed to produce a majority government in the Commons, and before that, we would have to go back to 1929 to find a similar outcome. This book features high quality and data-rich examinations of the election. It is intended for audiences who want to go beyond a simple description of the election towards an enhanced understanding of why the election turned out the way it did. This book was published as a special edition of Journal of Elections, Public Opinion & Parties.