They did not vote blue no matter who, they built their own political bloc from fucking scratch

And if my grandmother had wheels she'd be a bicycle.

The political landscape of Serbia does not seem to be one in which the concept of "blue no matter who" even resolves to an intelligible idea.

You can't just transplant the political strategy of one set of conditions to a completely different set of conditions.

Certainly we have the same end goals, but your implied expectations do not match the conditions outside of Serbia.