Hammons endorsed former New York City Mayor Rudy Giuliani early in the 2008 Republican presidential primaries . When Giuliani withdrew from the race , Hammons endorsed Arizona Senator John McCain . Hammons was also Oklahoma 's youngest at-large delegate to the 2008 Republican National Convention . While at the RNC , on his 20th birthday and the final day of the RNC , Hammons had the opportunity to meet Giuliani
2008 Republican National Convention
2008 Republican National Convention
John Tyler Hammons