ABC News: In an election cycle filled with fighting words on climate change, a ballot measure in California could set the precedent for the rest of the country and give a needed boost to Democrats who have unsuccessfully tried to pass a comprehensive energy bill. Proposition 23 would suspend California’s Global Warming Act of 2006 until unemployment in the state drops to 5.5 percent or below for four consecutive quarters. The clean air law was signed by Gov. Arnold Schwarzenegger and …