Proportional representation can rescue Britain’s warped politics. It could stop Nigel Farage arriving at No 10 with less than 30% of the vote, says Guardian columnist Polly Toynbee

Greater Manchester Mayor Andy Burnham launched his campaign for the upcoming Makerfield by-election, with a thinly veiled pitch for the keys to Downing Street

Proportional representation can rescue Britain’s warped politics. It could stop Nigel Farage arriving at No 10 with less than 30% of the vote, says Guardian columnist Polly Toynbee