Candidate Alani Bankhead vigorously denies claims she is a Republican plant running to take votes away from a more popular independent. KALISPELL, Mont. — Her candidacy was boosted with mysterious dark money. Some of her own party have suggested she is a “Republican plant” running a fake campaign. Still, Democrat Alani Bankhead continues to crisscross Montana in a gray Subaru in her long-shot bid to be the state’s next U.S. senator. In the weeks since she refused to step aside to make way for an independent opponent who is more popular with many Democrats, Bankhead said she has been personally...