Complex sentence: Sergey Alekseyevich Subbotin (b.15 August 1955, Yushkovskaya village, Arkhangelsk Oblast, USSR) is the ex-mayor of the city of Murmansk since a surprise victory in March 2009 over United Russia candidate and incumbent mayor Mikhail Savchenko.
Split into simpler sentences: Sergey Alekseyevich Subbotin (b.15 August 1955, Yushkovskaya village, Arkhangelsk Oblast, USSR) is the ex-mayor of the city of Murmansk. He won a surprise victory in March 2009 over United Russia candidate and incumbent mayor Mikhail Savchenko.