Zimbabwe President Emmerson Mnangagwa risks losing the support of war veterans and could lose elections scheduled for later this year, a top adviser says.War veteran and special adviser to the president, Christopher Mutsvangwa was speaking after he and several other officials, including cabinet ministers, lost the right to represent Zanu-PF in parliamentary polls due in July."It is inconceivable that the president will win given that the party's members have been largely disenfranchised," Mutsvangwa said, in comments carried by the private NewsDay. 'Anger and disapproval'Mutsvangwa was hoping to represent Zanu-PF in the town of Norton, west of Harare. He lost to Langton Mutendereki, a newcomer. War veterans' spokesperson, Douglas Mahiya is also reported to be struggling to retain his right to stand in Harare South.Mutsvangwa said many people were annoyed. "They are fully aware of the width and breadth of the anger and disapproval of the rank and file party membership on the conduct of the primary elections," he said.Chaotic scenesThe internal Zanu-PF elections held over several days this week were marred by some chaotic scenes, mainly due to the late delivery of ballot papers and the absence of some candidates' names on the voting papers. There were also allegations of vote-rigging and intimidation in some areas. But commentators here have praised the fact that members of the Zanu-PF old guard fell to political newcomers, saying this is a sign of democracy at work within the party.In a statement released earlier this week Mnangagwa said despite "teething problems" experienced during the polls, he was "convinced that the democratic course we have started in the management of our party affairs is the correct one".