TREVOER HUNNICUTT and JEFF MASON THE wildfires sweeping the west coast states have assumed centre stage in the U.S. election campaign, with President Donald Trump visiting California after blaming the blazes on poor forest management and his Democratic challenger, Joe Biden, stressing the role of climate change in stoking the fires. The Republican president, seeking re-election on November 3, is due to meet with firefighters and emergency officials in Northern California. Democrats have blasted Trump for remaining mostly silent about the largest wildfires in state history, except for his efforts to blame the blazes on failures by the state government.…