UK Conservatives' 'levelling up' promises judged harshly by voters

Across the north of England, in 2019's' general election, many Labour constituencies were won by the Conservatives. As well as a promise to 'get Brexit done', then-Prime Minister Boris Johnson pledged to 'level up' deprived areas of the country with money from central government. Five years on, have the Conservatives done enough to convince voters to stick with them?