Conversation so far:
what did Chris Christie do on the trump campaign?
Despite having criticized Donald Trump prior to leaving the race, he endorsed Trump on February 26, 2016.
what were Chris Christie responsibiliites on the trump campaign?
On May 9, 2016, Trump named Christie to head a transition team in the event of a Trump presidency.
what was Chris Christie's Trump administration role?
Trump considered Christie as a potential vice-presidential running mate, and he was on the shortlist alongside former Speaker of the House Newt Gingrich and Indiana Governor Mike Pence.

Question: did he do so?
Self-contained rewrite: did trump pick Christie over Gingrich and Pence?