Disclaimer. Don't rely on these old notes in lieu of reading the literature, but they can jog your memory. As a grad student long ago, my peers and I collaborated to write and exchange summaries of political science research. I posted them to a wiki-style website. "Wikisum" is now dead but archived here. I cannot vouch for these notes' accuracy, nor can I say who wrote them.
Norris. 2004. Electoral engineering: Voting rules and political behavior. Cambridge, UK: Cambridge University Press.
Norris wants to know the effect of X (electoral systems) on Y (cleavage politics).
Cleavage politics. Will a party continue to pander to a narrow base (e.g. labor) or try to expand and become a catch-all party (e.g. Labour)?
The rational choice hypothesis wins.
This is, at heart, a time-series thesis, but it uses only cross-sectional data.
Research by the same authors
Research on similar subjects