Complex sentence: In 2013, as one of the chief proponents of public school choice, Clark voted successfully to override Democratic Governor Mike Beebe's veto of a bill to require photo identification when one casts a ballot in Arkansas.
Split into simpler sentences: In 2013, He was one of the chief proponents of public school choice. He voted successfully to override Democratic Governor Mike Beebe's veto of a bill to require photo identification when one casts a ballot in Arkansas.