Sydney Morning Herald: THE Greens are widely tipped to hold the balance of power in the Senate after August 21 and have promised to use their numbers to push for tougher action on climate change and a more compassionate approach to asylum seekers. Polling suggests the Greens could pick up an extra four Senate spots, taking their numbers from five to nine. The Greens’ Senate hopeful in NSW, Lee Rhiannon, is rated a 50-50 chance by pollsters of claiming a seat. The party needs 14.3 per cent of the vote …