Partisan Dealignment and Personal Vote-Seeking in Parliamentary Behaviour

Abstract

What shapes legislators’ incentives for personal vote-seeking in parliament? Recent work suggests that partisanship among voters deters personal vote-seeking, by limiting its effectiveness. This has potentially significant implications for policy-making, election results and patterns of accountability. However, empirical tests of this argument remain few in number and have several limitations. This article thus offers a new test of the relationship between partisanship and personal vote-seeking. Using legislators’ bill proposals as an indicator of their personal vote-seeking activity, I analyse legislative behaviour in the UK House of Commons between 1964 and 2017. I find that members of parliament make more legislative proposals when voters are less partisan. Moreover, partisanship appears to moderate the influence of other drivers of personal vote-seeking: electorally vulnerable legislators make more legislative proposals, but only at low levels of partisanship. These findings provide new evidence that voters’ relationships with political parties affect legislators’ electoral strategies and parliamentary behaviour.