It's a difficult one. I am left wing, but the left doesn't pay any heed to cultural differentiation, then on the right they say they will get serious on immigration, but the numbers only go up as they are the party of business and business really wants cheap labour that doesn't understand labour law. The solution shouldn't be to stay and compete with them on a reproductive level as an intelligent person knows that mechanisation and neo liberalism will condemn their childs future as will leftism and open borders.