Whether the next general election is sooner or later, it will be hotly contested. Is Labour’s surprise showing in June 2017 a base to build from or a high watermark? Should the party go for a one more heave approach to get over the line or adopt a more hegemonic and alliance-based approach? This new thinkpiece by Matthew Sowemimo examines the evidence and suggests Labour may have reached a glass ceiling. This, he argues, combined with a new level of voter volatility, demands a fresh electoral strategy.