In a nondescript office north of Kenya’s capital Nairobi, social media influencer Ian James Mwai constantly glances at his two mobile phones, wary of missing an opportunity to promote the political party he works for. The 23-year-old is in the vanguard of the growing ranks of influencers feverishly punching keyboards and hoping to tilt the outcome of the country’s high-stakes elections, which are less than 100 days away. The rising dominance of platforms like Twitter and Facebook has opened up a new front in Kenyan politics, with candidates desperate to draw the attention of the country’s 12 m…