UK: Metro mayors polling
Opinium conducted polls of the West Midlands and Tees Valley metro mayoral elections for the Northern Powerhouse Partnership.
Date for these can be found below
West Midlands based on a total sample size of 971 and 357 once this is filtered to the voting intention question headline figures.
Tees Valley was commissioned on a ‘best efforts’ basis and has a total sample size of 387 and a base of 243 for the final headline voting intention question. No turnout filter was employed here as this would render the sample size unreasonably low for reporting.