SOFIA (Bulgaria), November 3 (SeeNews) - <em>Tsetska Tsacheva, the candidate supported by Bulgaria's ruling GERB party in the forthcoming presidential elections, could face a tougher contest than originally anticipated, political analyst Dimitar Bechev says in an article published in EUROPP – European Politics and Policy - a multidisciplinary academic blog run by the London School of Economics and Political Science. (http://blogs.lse.ac.uk/europpblog/2016/10/31/game-of-polls-bulgaria-presidential-election/).</em>