Factbox-Kenya's 2022 presidential election contenders

FILE PHOTO: Banners of Kenya's opposition leader and presidential candidate Raila Odinga of the Azimio la Umoja (Declaration of Unity) coalition, and Kenya's Deputy President William Ruto and presidential candidate for the United Democratic Alliance (UDA) and Kenya Kwanza political coalition, are seen in Kericho, Kenya, July 30, 2022. REUTERS/Baz Ratner

NAIROBI (Reuters) - Kenya holds a presidential election on Aug. 9 with opinion polls predicting a tight race between veteran opposition leader Raila Odinga and serving Deputy President William Ruto.

Incumbent President Uhuru Kenyatta, constitutionally barred from seeking a third five-year term, has publicly criticised his deputy and endorsed Odinga.