There's no such thing as a left-leaning party that harsh on immigration. Only parties that call themselves left-leaning. You may as well speak of a capitalist party that wants to seize and redistribute the means of production.
This was probably the most ignorant thing I've read today. You're knowledge of political history must not extend very far.
is there a single party in Europe campaigning on the promise of more immigration, I wonder? if so, how do they fare? :)