As the Greens are experiencing a surge, we ask who the main players are in what could end up being the “Ukip of the left”.
The furore surrounding the Greens' exclusion from the TV debates could be working in the party's favour.
Shadow justice secretary tasked with preventing loss of voters to left-wing rival.
The Greens are a legitimate political party, with real MPs and thousands of voters. If Ukip deserve to be on the platform, so do they.
For the Green party, asking nicely for employers to pay a living wage isn't enough.
Instead of asking why there isn't a feasible left-of-centre party, we should be asking why, when support for their policies is so high, only 1 per cent of voters crossed the Greens' box in May 2010.
There is certainly space in British politics for a party beyond the edge of Labour, but a left-wing alternative has yet to emerge.
It could be a blip, but the Green party's polling suggests a bright future.
The inclusion of the party would help to split the left-wing vote and harm Labour and the Lib Dems.
The party celebrates after winning a seat off the Greens in one of the safest wards in Lucas's constituency.