Death Casts a Vote begins with a young woman (Migdia Chinea) finding her fiancée, David Brady, dead inside his car with a hose leading from the exhaust pipe into the vehicle. The prevailing theory is that David died of carbon monoxide poisoning as a result of suicide, but his fiancée and father (Robert F. Simon) both reject that explanation and believe he was killed. Quincy (Jack Klugman) does find some inconsistencies when he conducts the autopsy and begins to believe that the victim was murdered which leads him into an investigation of the labor union in which David was a rising star.
I would say that the highlights of this episode for me are that it features a murder mystery and the story maintains relevance to this day in that corruption in labor unions and illegal immigrant workers continue to be hot button topics in our society. Whenever I see a Quincy episode like this where the plot line involves something that we are still struggling to deal with nearly 40 years later, I can't help but wonder if this will still be the case 40 years from now? In any event, I think it is a credit to the Quincy production team and writers that several of the topics addressed in these episodes are enduring issues that have stood the test of time.
All of that said, I wouldn't characterize this as one the better episodes of Season 3 in that there is very little action and it just seems to move at a very slow pace. The resolution is pretty anti-climactic as well, so don't expect an exciting ending as a payoff.