PNU chairman Peter Munya declared he won't back Rigathi Gachagua should he vie for presidency next year. Photo: Peter Munya. Munya takes aim at Gachagua's conductThe PNU chairman questioned Gachagua's character and called on him to urgently address his conduct towards other political figures within the United Opposition. Because those dictatorial tendencies are the same ones we are saying we don't want in the current government," Munya said. The growing chorus of dissent within the United Opposition poses a direct challenge to Gachagua's standing as the region's dominant political figure.