user
Given a cartoon image and a caption. Caption: You're voting with your pacemaker again, Hargrove! Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
Criticizing someone "voting with your heart" means that they are not acting logically, and instead following their emotions. The boss is instead criticizing the man for "voting with his pacemaker"; a pacemaker is an artificial, robotic heart. This is an ironic criticism, because the man is voting in-line with the robots, and instead of his heart representing voting emotionally, his pacemaker represents voting with the interests of the robots.