One in 100 were unable to vote up after turning up at polling stations without valid ID, election observers have estimated.
The group Democracy Volunteers sent observers to 118 of the 230 councils holding elections and found 1.2% of people were turned away because they lacked the relevant ID.
Of those turned away, 53% were identified as being ‘non-white passing’.
Tom Brake, of the Unlock Democracy campaign group, said: ‘We knew for certain that photo voter ID was costly and unnecessary.
'Now we know it is also discriminatory, with more than half of those turned away from polling stations identified as non-white by election observers.’
The figures came as senior Tory Jacob Rees-Mogg suggested voter ID was an attempt at gerrymandering.
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