Ron Barber

Ronald Sylvester Barber (born August 25, 1945) is an American politician. He was a member of the United States House of Representatives from 2012 to 2015. Barber, a member of the Democratic Party from Arizona, was district director for U.S. Representative Gabby Giffords before Giffords resigned her seat because of injuries she got in an assassination attempt, during which Barber was also injured. 
Barber won the Democratic nomination for the special election to finish Giffords's term and was sworn into office on June 19, 2012.
In the 2012 general election, he was elected to a full term. Barber lost his 2014 re-election bid to Martha McSally by 161 votes.