U.S. Rep. Don Bacon, R-Neb., at left, and State Sen. Tony Vargas of Omaha are running for the 2nd District seat in the Omaha-area. (Courtesy of Photos/House of Representatives and Unicameral Information Office)OMAHA — The Democratic Congressional Campaign Committee this week announced reserving $1 million in television and digital advertising time in Nebraska’s 2nd District U.S. House race. It had reserved none by this point in the 2022 electio…