These charts show how Britain’s Tory party lost its way

Read more of our coverage of Britain’s election, including our poll tracker, updated daily.

AFTER 14 YEARS in power Britain’s Conservative Party is on the verge of losing it. Rishi Sunak, the prime minister, and his party are polling 20 points behind the opposition Labour Party a few days before the election scheduled for July 4th. Our prediction model suggests that the Tories could end up with their lowest share of seats in history. Incumbents globally are having trouble winning elections (look at what just happened to Emmanuel Macron). But the Tories’ troubles look especially bad. Here is a data-driven guide to some of their most important policy missteps, plus a couple of cases in which they got things right.