Four years after John McCain's choice of Sarah Palin as running mate, it might feel to voters as though a ticket's No. 2 can be a make-or-break decision for the ticket's No. 1. But experts note that the pick actually doesn't do much, if anything, to change the final result.
:fill(white):background_color(white)/cloudfront-us-east-1.images.arcpublishing.com/adn/ZLKQK4ENYJBHZE4W7NC3NDWIRU.jpg)