If that 20% is evenly distributed everywhere, then they don’t need their own local candidate. That’s like having the men’s candidate or the left-handed candidate.
They won’t have any candidate. Regardless, the same problem applies. If these people are spread out unevenly, there will still be voters in districts without representation. Their rep won’t give a shit about them because they vote for a different team, and the rep on their team but in a different district will care mildly at best because they can’t actually vote for that rep.
If that 20% is evenly distributed everywhere, then they don’t need their own local candidate. That’s like having the men’s candidate or the left-handed candidate.
They won’t have any candidate. Regardless, the same problem applies. If these people are spread out unevenly, there will still be voters in districts without representation. Their rep won’t give a shit about them because they vote for a different team, and the rep on their team but in a different district will care mildly at best because they can’t actually vote for that rep.