Complex sentence: He also holds the longest winning streak of elections contested in Singapore's history, winning 6 elections in a row since 1984, when he defeated current Minister for National Development Mr. Mah Bow Tan in Potong Pasir SMC, winning 60.82% of total votes cast.
Split into simpler sentences: He also holds the longest winning streak of elections contested in Singapore's history, winning 6 elections in a row since 1984. He defeated current Minister for National Development Mr. Mah Bow Tan in Potong Pasir SMC, winning 60.82% of total votes cast.