By Paul Taylor BRUSSELS (Reuters) - Leftist Alexis Tsipras's re-election as Greek prime minister carries a mixed message for Europe's battered centre-left and for anti-capitalist radicals hoping to overturn the continent's austere economic orthodoxy. Seven years of financial crisis and euro zone debt woes have mostly benefited the centre-right in the European Union, along with anti-EU populists. Conservative governments in Spain, Portugal and Ireland, facing elections in the coming months after implementing tough EU/IMF bailout terms, may take comfort from the fact that it is possible to drink the poison and survive politically.