During the 2015 Sri Lankan parliamentary election, Crosby was an advisor to incumbent Prime Minister Ranil Wickremesinghe, whose United National Front captured a plurality of seats and formed a governing coalition along with President Maithripala Sirisena's Sri Lanka Freedom Party. The campaign featured widespread adverts that contrasted "good governance" offered by the incumbent Prime Minister with the "jungle law" of former President Mahinda Rajapaksa, whose ten-year rule was marked by family corruption and strident nationalism after the 2009 defeat of the Tamil Tigers. In September, Canadian press linked Crosby to the Canadian Conservative Party, with reports suggesting he was working as a strategist during the election. Both Crosby and his partner rejected claims Crosby or anyone at CT Group was involved in the Canadian election.