As a member of President Pierre Nkurunziza's ruling party, the CNDD-FDD, Rufyikiri expressed his opposition to Nkurunziza's controversial bid for a third term in 2015. As a result, he was effectively marginalized, although he initially remained in his post as Second Vice-President. On 25 June 2015, Rufyikiri left the country and went into exile in Belgium, declaring that Nkurunziza's candidacy was unconstitutional and that, by running, Nkurunziza was putting his own interests ahead of the nation's interests. He said that Nkurunziza was "deaf" to ignore all the voices calling on him not to run. The government welcomed Rufyikiri's departure and alleged that he was involved in the failed May 2015 coup attempt.[3]