We will see what happens but a small conservative faction that broke away from the Republican Party of Greece (New Democracy) and calls itself Independent Greeks will help the SYRIZA leftists govern.
Their unifying rationale is their total opposition to the EU and its austerity regime.
The Greek equivalent of the Tea Party in the US and UKIP in the UK will participate in the new government of Greece...
But just like in the US, the conservative movement will have no real clout in the government.