I was actually wondering about that as well today
The way the BBC does it, they will only read the second place winner if the first place winner is short enough (I think 6 weeks or less) because in that case the vote for the next poll would just be super close to the previous one, and that’s a bit useless.
Having said that, it all depends on the schedule we will pick for the first place. E.g. Yokohama consists of a prologue + 7 chapters, and those are fairly short (15 - 20 pages), so given this is the Intermediate Club, I was wondering whether we’d want to read two chapters per week, putting us at a total of 4 weeks for the whole manga. In that case we’d read the second winner straight away. But if we decide we only want to read one chapter per week (because maybe they are very hard? I don’t know the manga yet) then the schedule would span 8 weeks, and we’d have another vote for the next book after that.