 Van Ostern's campaign recently reported well over $700,000 raised in the second quarter. The seat is open with the impending retirement of incumbent Democrat Ann Custer. Maine drivers are still handing more of their money over when it comes time to fill up their vehicles. According to AAA, the average cost for a gallon of regular fuel in Maine, now $3.49, that's up five cents in the past week and is also three cents more than yesterday.