Early voting should be a peaceful and positive exercise in democracy. First, voters find a parking space. They fish around for a photo ID. They might be greeted by volunteers with materials promoting a favorite candidate, wait in line to vote — if there’s even a line — and then it’s over. Then there’s Tamarac. In this west Broward city, politics — and early voting — have become increasingly chaotic, divisive and bizarre. A half-dozen Broward sheriff’s deputies arrived at a Tamarac early voting site Tuesday, at a county building that houses a library and a branch office of the supervisor of elections. Mike Stocker/Sun SentinelSteve Bousquet is a Sun Sentinel columnist. A verbal commotion had ensued over the presence of black security cameras attached to pillars outside the building in plain view of voters and hangers-on. The four cameras were installed by City Commissioner Elvin Villalobos.