Guardian: The Greens will unveil their manifesto next week with a pitch to voters highlighting the “yawning gap” on the left they say has been made vacant by New Labour. Caroline Lucas, the Greens leader, said the party planned to shake off its single-issue image by emphasising policies on social justice and the economy. The Greens are redoubling their efforts to enter parliament by fielding 316 candidates across the UK – an increase of more than 50% on the 202 members who stood at the …