I'm probably too hooked on watching the polls, and I put the obsession down to West Wing, but we have had a couple of good polls in the past week, from Ipsos-Mori and Survation. Both polls show the Greens on 5%.
Most interesting is our support by younger voters. Survation has 10% of 18 to 35 likely to vote Green. Ipsos-Mori has 7%.
Remember that this is likely to vote Green in a general election where historically the polls don't show us doing too well (something to do with the Dickensian voting system). Polling for a PR election or locals is likely to be even higher.