Every four years, the outcome of Salt Lake City’s west-side City Council race seems as predictable as a clock: plain-spoken incumbent Van Turner wins the District 2 seat over outspoken activist Michael Clara. This year, the dynamic is different. Kyle LaMalfa, a third, fresh-faced candidate, has guaranteed a Sept. 13 primary. And the normally well-mannered contest has taken an ugly twist — marred by an anonymous mailer that plays the Mormon card and injects partisanship into the officially nonpartisan race.