Age itself really wouldn't matter to me. If mental competency was an issue, I'd definitely reconsider, but frankly, that can happen at any age. There are lots of issues that the elderly are more prone perhaps to have that would make me think twice about voting for them, like Alzheimer's, debilitating health, difficulty connecting with/understanding younger populations/concerns, but there are also older folks who are in great health and and knowledgeable about current culture and issues. It all really depends on the person.