Louis Klarevas bets that Greece's newly empowered leftists aren't as radical as some signs suggest:
Even if SYRIZA earns the mandate and manages to somehow seize the reins of power, the changes in Greek policy will hardly be "radical," as the Coalition of the Radical Left's name misleadingly implies. The party's young, charismatic leader, Alexis Tsipras, has made it clear that he has no intentions of withdrawing Greece from the eurozone, let alone the European Union. Instead, we should expect a more nuanced approach to economic revitalization, which would likely include an aggressive renegotiation of the bailout terms currently in place between Greece and the "troika" composed of the EU, the European Central Bank, and the IMF, as well as a demand for more public investment in lieu of loans.
Francis Fukuyama doesn't see what option the leftists will have:
Outside pressure will never succeed in bringing about change by itself unless it can be allied to internal forces that themselves want reform. In Italy, these forces at least potentially exist, but in Greece they seem altogether absent. … [A]ny fix would have an effect only over a prolonged period, and is therefore not terribly relevant to the short-term future of either Greece or the EU. If the Greek public wants to reject the austerity agreement, which seems pretty clear, the country will be heading for outright default and exit from the euro.
The Dish 