1. Adams, J., Clark, M., Ezrow, L., & Glasgow, G. (2004). Understanding change and stability in party ideologies: Do parties respond to public opinion or to past election results? British Journal of Political Science, 34(04), 589–610.
2. Butler, P., & Collins, N. (1996). Strategic analysis in political markets. European Journal of Marketing, 30(10/11), 25–36.
3. Clarke, H., Sanders, D., Stewart, M., & Whiteley, P. (2009). Performance politics and the British voter. Cambridge: Cambridge University Press.
4. Cwalina, W., Falkowski, A., & Newman, B. I. (2011). Political marketing: Theoretical and strategic foundations. New York: M. E Sharpe.
5. Deacon, D., Downey, J., Stanyer, J., & Wring, D. (2015). General Election 2015: the media campaign [report 5 covering 30th March–7th May]. https://dspace.lboro.ac.uk/dspace-jspui/handle/2134/18148