More than 50m Americans cast ballots in early voting with three days to go before midterms

Record number of early votes cast, with Democrats outnumbering Republicans in states which collect that informationThere has been a surge of early voting for the US midterm elections, with millions more Americans going to the polls compared with the last such election amid a series of tight contests that will determine control of Congress.More than 50.5m early votes have been cast across the US as of Saturday mornin…