DES MOINES — The U.S. Census Bureau and U.S. Sen. Chuck Grassley may do something that a controversial elections bill at the Statehouse is said by backers to achieve but almost certainly will not: shorten the next campaign.Some Republicans who spoke in support of the sweeping elections bill that passed last week said one of its most controversial sections — a reduction of the state’s early voting period — was necessary to reduce the time political campaigns and organizations spend bugging voters to cast their ballots.If you believe shortening the early voting period by nine days will reduce the number of campaign phone calls, text messages, flyers and TV ads that Iowans see and hear, let me know and I’ll give you my Venmo account — I have a perfect investment opportunity for you.However, help may be on the way after all because Grassley and the census may inadvertently shorten at least one election in Iowa.Let’s start with the census.