Source: DFW NBC5.
There are good reasons not to get your news from local television stations, not least of which is reporting this bad. It's not "Dewey Defeats Truman" bad, but it's still pretty bad. And here it is a week after the election and DFW's NBC5 television still has this up on its website of election news.
Looking at NBC5's vote totals, you can see where NBC5 went wrong. The votes are exactly the totals reported by Collin County. The problem for DFW NBC5 is that the City of Richardson is spread over two counties. Adding in the Dallas County votes, you'd get the true totals: Dubey 4,909; DePuy 4,609.
Remember, if you want the best in local news, news you can trust, look no farther than The Wheel.