Today's AI's aren't that smart. They look at different corpuses of "knowledge" and do some pretty straightforward processing to rationalize an outcome. They don't quite have an opinion.
Chatbots _kind of_ have an opinion, or more appropriately they have the regurgitated opinion of whom the people it interacts. Theres nothing around context though, it's usually simple probability with a little part-of-speech and a library of pre-canned responses.
You have an interesting point though. Assuming they are "strong" AI's with one operating system per robot, they have "free will" to make desisions and are able to learn and adapt, what if we made the robots live (operate) in society for 18 years prior to allowing them to vote? If they were copies, they would diverge at some point and develop unique "personalities". I think we all know how it will play out though. All the robot cars would vote to increase taxes for replacing roads. Cars would also have to pay taxes and would be forced to charge their owners fees. Taxis would go out of business and there will be a resurgence in horses and horse drawn carriages.
Random question, has anyone seen the movie Her? This movie blew my mind with the personal context issues that may happen we build intimate relations based off "human" social rules. It's one of those easy to watch romance movies where a guy and an anvanced AI fall in love.