How Cameron's right choose to get it so wrong

This from the Guardian today is a terrifying foretaste of how the prospect of landslide victories at general elections lead political leaders-in-waiting to contemplate playing with fire. If we fear the BNP at home, how much more so should we fear the politics of Poland abroad. Especially when Cameron decides it's time to unleash the far right's most unpleasant side:

[...] The parties most likely to join such a grouping are a motley collection of populists, nationalists and social authoritarians: not the sort of friends a leader trying to project a modern and tolerant image should want to be seen with in public. There is certainly nothing compassionate about the conservatism of Poland’s stridently homophobic Law and Justice Party, for example. Nor is tolerance a strong point for the xenophobic Danish People’s Party or Italy’s Northern League, whose leader once referred to Africans as “bingo-bongos”. Allies like these would put Cameron only a goose step or two away from the extreme right.