In the 2010 and 2017 local elections there were wide differences in voter populations in the majoritarian electoral districts within each municipality. In 2010, across the country, the number of registered voters in a single-mandate constituency varied considerably within the same local government unit; at times, by more than 1,000 per cent. Even in Tbilisi, where a large population of voters should make it easier to establish comparable electoral districts, there were deviations of up to 30 per cent. In the 2017 local elections, only 20 per cent of the majoritarian constituencies was within 15 per cent of deviation from the average number of voters within each municipality, with the other 80 per cent of constituencies above 15 per cent. While some deviation in the number of voters in each electoral district may be unavoidable due to geographic or demographic factors, such large deviations undermine the principle of equality of the vote.