The measures could test Democratic solidarity less than two weeks after the party took over complete control of the Legislature.
One measure would make Colorado a so-called "Right To Work" state. That measure has a Republican sponsor and is unlikely to advance.
The other proposal before a Senate committee is more acrimonious. It's a proposal to require local governments to allow collective bargaining by professional firefighters, even if local ordinance prohibits it.
A similar measure divided Democrats four years ago. Both bills face a first hearing Wednesday. If approved, they'd still have to face the entire Senate and then the House.
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