Democrat Poised to Become First Muslim in Congress By NEIL MacFARQUHAR MINNEAPOLIS — Keith Ellison, the Democratic candidate for Congress here, strode among the stalls of exotically printed fabric, telephone cards and sweet tea at a Somali mall, shaking hands with his fellow Muslims. “The community showed up big!” Mr. Ellison, 43, said, dispensing hugs as he thanked the many immigrant Somalis whose votes had helped him beat six other candidates in a primary race in September. Mr. Ellison, a stocky criminal defense lawyer who converted to Islam in college, is expected by experts to make history on Election Day...