Baldwin has long been vocal about the threats climate change pose to Wisconsin. Hovde has said much less about his plans.

Democratic U.S. Sen. Tammy Baldwin and Republican challenger Eric Hovde repeatedly accused each other of lying during an often testy and confrontational debate.

Democrat incumbent U.S Sen. Tammy Baldwin and Republican challenger Eric Hovde sparred over campaign ad accusations and articulated their policy visions in a heated debate Friday night in Madison. Beginning with the topic of how the candidates would protect and lower the cost of health care,