Gary Johnson. Officially, and with 70% of the votes in the first round (for perspective, in 2008 it took six rounds of voting to pick a candidate).
Both the Presidential and Vice Presidential nominees are elected at the convention through independent voting processes starting with the presidential nomination. The Presidential nominee does not choose his or her running mate.
Johnson did request that Mr. Gray be chosen, and Gray won 59% of the votes in that contest. It seems that the presidential nominee has some influence on the VP nomination, but does not necessarily get the person he wants. Fortunately, Johnson endorsed Gray early on, so it’s a united ticket.
END OF LINE