 When you need extra cash, go to 27cash.com. That's 27cash.com. 27cash.com. The granddaddy of them all is happening tonight at the Polk County Fair in Fertile, Minnesota. It's super demo derby action in front of the grandstand starting at 6.30 p.m. Enjoy the last day with the midway opening at noon. Plus the parade and best fair food around. Hurry in before all the fun ends and watch the fireworks starting at 10.30.