The polls are irrelevant. Jinbei was 110th in his first one and 35th in his second, he still joined. It’s not like Oda’s waiting to see how well Carrot and Yamato do and the favourite joins. Either he’s writing the story of these two joining the crews or he isn’t, a poll won’t change that
If that was what he was doing, it would be Law and Hancock as Strawhats anyway, as they’re far more popular and have been for a lot longer.
What the polls might do is determine how much screentime a character gets. He’ll look at Yamato’s placement and think “folk like what I’m doing here, I’ll keep this up.” Law’s huge role in the story is predominately down to how people adored him from his very first appearance.
What he’ll do with Carrot is a bit more uncertain because there’s such a discrepancy between how his primary market (Japan) and the rest of the world treat her. He might see this and think “maybe I should start giving her actual scenes”, he might continue doing exactly what he’s done throughout Wano with her- not a lot- because the Japanese don’t care all that much.
I suspect he’ll go for a slightly larger role, but nothing huge. Expand how much he shows her inevitable comeback against Perospero. Maybe tell the anime to dwell on the fight more than he did in the manga.