Ehlers was a moderate Republican. According to the "National Journal," in 2006 his votes split 50-50 between "liberal" and "conservative." While strongly anti-abortion and supportive of lowering taxes, he was willing to break with his party on environmental and government spending issues. He was a member of the Republican Main Street Partnership and Republicans for Environmental Protection. He was the only member of the Michigan Congressional delegation of either party to vote to raise fuel economy standards for automobiles in 2001 and 2005.