R. J. (University of Bristol, England, UK) Johnston 
Money and Votes (Routledge Library Editions: Political Geography) [PDF ebook] 
Constituency Campaign spending and Election Results

Is the election result in a constituency affected by the amount of campaign spending there? This book, originally published in 1987 was the first major study of this important question. Based on extensive original research, it addresses two main issues: the impact of constituency campaign spending on election results in Britain: and the question of how that impact changes with the level of spending. The author develops a framework for analysing spending and its impact based upon American analyses of campaign expenditures, and focusses on general election results from 1950-83. Consideration is also given to minor parties and to both local and European elections.