Could be an interesting way for candidates to get in front of third-party spin. When you Google "Bernie Sanders" you could be greeted with rich content from the Sanders campaign explaining his positions, rather than links to hit pieces and other info-detritus.
Of course, either way you're getting somebody's propaganda.
My concern is then the composition of the rich content when Google offers itself as the platform. "Welcome, to our podium, Canditate A. We've already constructed the stage and backdrop, too, with these accompanying articles, images, and layout."
It sounds, initially, like Google's role is very passive, but I think control over what surrounds the podium has the potential to be very active. "Hey, Candidate B has better lighting!"
Google as active medium becomes the active message? Thoughts?
Of course, either way you're getting somebody's propaganda.