Maryland voters will pick a replacement for the popular Barbara Mikulski, who is retiring after 30 years in the U.S. Senate.
U.S. Rep. Chris Van Hollen, a seven-term Democrat, is running against Kathy Szeliga, minority whip in the state House of Delegates.
Van Hollen has run as an experienced lawmaker who is willing to reach across the political aisle to do important work. Szeliga has worked to use that experience against him, casting him as an insider of dysfunctional Washington.
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