<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?washindani wawili wakuu wa kabore ni mgombea aliyemaliza wa pili katika uchaguzi wa 2015, kiongozi mkongwe wa upinzani zephirin diabre na eddie komboigo, anayegombea kwa chama cha rais wa zamani blaise compaore.  <response>: the presidents two main challengers are 2015s runner-up, veteran opposition leader zephirin diabre, and eddie komboigo, standing for the party of former president blaise compaore. 