"The Davidson County Election Commission 'utterly failed' as hundreds of voters experienced problems at the polls last week, the leader of a voter advocacy group said Monday. ... Mary Mancini, executive director of Tennessee Citizen Action, said a hotline set up at her organization's MetroCenter office received more than 600 calls on Nov. 6. Callers complained about long lines; poll workers running out of provisional ballots, change-of-address forms and other documents; precincts not having adequate staffing; poorly trained poll workers; incomplete voter rolls, and other problems.