PEWAUKEE, Wis. — Incumbent Republican Rep. Derrick Van Orden has warded off his Democratic challenger in Wisconsin’s costliest House race ever. Van Orden leads Democrat Rebecca Cooke 211,327 votes (51.4%) to 199,829 (48.6%) with 99% of counts counted, the Associated Press reports. Van Orden, known for his hot temper and more moderate voting record, fought…