Complex sentence: In 1928 she became Arizona's Democratic national committeewoman, and in 1932 she campaigned heavily for Franklin Roosevelt; she made one of the speeches seconding his nomination at the 1932 Democratic National Convention.
Split into simpler sentences: In 1928 she became Arizona's Democratic national committeewoman, and in 1932 she campaigned heavily for Franklin Roosevelt. She made one of the speeches seconding his nomination at the 1932 Democratic National Convention.