After Kibaki's tenure ended in 2013, Kenya held its first general elections after the new constitution had been passed. Uhuru Kenyatta won in a disputed election result, leading to a petition by the opposition leader, Raila Odinga. The supreme court upheld the election results and President Kenyatta began his term with William Ruto as the deputy president. Despite the outcome of this ruling, the Supreme Court and the head of the Supreme Court were seen as powerful institutions that could carry out their role of checking the powers of the president.