Importing them or buying them. Women vote overwhelmingly leftist because their mentality gravitates toward replacing the role of a husband with the state. Weak men vote to be mastered, they will vote themselves into chains of slavery for free shit, like what welfare has done to the black communities.

I'm not in favor of barring anyone from voting on identity grounds however (collectivism is cancer), but the natural consequence of a starship troopers system would see the kind of people with weak will excluded from the process.