WASHINGTON, Nov 3 (Reuters) - Reeling from months of protests, President Barack Obama's advisers are worried that administration approval for a planned oil pipeline from Canada could cost him political support from Democrats in 2012.Senior officials at the White House and Obama's Chicago campaign headquarters have fielded complaints from supporters who are unhappy about TransCanada Corp's plan to build a massive pipeline to transport crude from Alberta to Texas, sources familiar with the situation said.The concerns could contribute to a delay in the approval process for the Keystone XL pipeline just as the 2012 presidential campaign heats up.The State Department,...
