Charlottesville’s consumer electronics mogul — and lifelong Republican — Bill Crutchfield is backing former Gov. Mark R. Warner’s bid for the U.S. Senate because he says the Democrat has a record of success in government, understands business and technology, and is willing to work across the aisle.

WASHINGTON-Sen. John Warner acknowledged Wednesday that he still has much work ahead in persuading fellow Republicans to back his climate change bill. He argued it’s a matter of national and economic security.