Burkina Faso's fractured opposition reached an accord Tuesday to unite behind a challenger to President Roch Kabore in November elections dominated by a deadly jihadist insurgency. Under the accord, 22 parties and other political formations agreed to back whichever candidate reaches the second round against Kabore in the November 22 presidential and legislative elections. "The common goal... is to offer an alternative to the Burkinabe people," said Adama Sosso, vice president of the main opposition Union for Progress and Change (UPC) party, as he unveiled the final document. UPC candidate Zephirin Diabre said the "historic" accord would enable "the writing of a new chapter in our history". Diabre -- a veteran politician like Kabore -- came second with almost 30 percent of the vote in the 2015 presidential race. Kabore was seen as a consensus candidate in 2005, embodying the former French colony's hopes for development and change. But he now faces growing doubts that he can defeat the insurgency. Burkina Faso has descended into chaos, with almost daily attacks from jihadist groups that have killed more than 1,100 people in five years. With whole swathes of the country falling outside the state's authority, the security forces appear unable to quell the spiral of violence. Nearly a million people have fled their homes because of the jihadist attacks and thousands of schools have had to close. ab/ck/thm/gd/bp