This study explores how long core political values last among national politicians and why they endure.

Study Design

Researchers analyzed unique longitudinal data from British House of Commons members surveyed in 1971–73 and again between 2012–2016. These surveys employed Rokeach-type value ranking instruments to capture personal political priorities.

Key Findings

The analysis reveals remarkable stability: these politicians maintained their core values consistently throughout their careers, despite decades passing since the initial survey. This strong empirical support confirms what social scientists call "the persistence hypothesis"—that early-career values solidify by a politician's thirties and remain largely unchanged until retirement.

Impact Beyond Academia

This finding has practical implications too: it suggests that shifts in political parties' overall platforms often stem from recruiting new members rather than changing the minds of established ones. Old-timers hold onto their foundational beliefs, resisting external pressures to adapt.