Complex sentence: On May 12,2015, Tubman was announced as the winning candidate of that grassroots poll with over 600,000 people surveyed and more than 118,000 chosing Tubman, followed by Roosevelt, Parks and Mankiller.
Split into simpler sentences: On May 12,2015, Tubman was announced as the winning candidate of that grassroots poll. Over 600,000 people were surveyed and more than 118,000 chose Tubman, followed by Roosevelt, Parks and Mankiller.