Lexington Herald Leader: The landscapes of Eastern and Western Kentucky have little in common, but the areas share at least two things: an abundance of coal and a pivotal role in the U.S. Senate race. That means coal policies, such as the controversial “cap and trade” approach to cutting greenhouse gas emissions, are a key issue in the contest between Republican Rand Paul and Democrat Jack Conway. In Western Kentucky, one concern is that cap and trade would cause higher rates for electricity produced …