i think this took exactly twelve seconds to get published, but i've said my bit on this. yes: it will piss off the left. but, this election is going to be fought on the center-right, which in the united states means the solid right just about everywhere else.
http://www.vox.com/2016/7/22/12244762/tim-kaine-hillary-clinton-vice-president-running-mate-announcement