sentences:  Because the sums are rounded down, there are always leftover seats which are then allocated in the second step, by awarding one additional seat to each constituency, in descending order of leftover sums, until all 288 constituency seats have been allocated.In the 2018 apportionment of seats, 263 seats were allocated in the first step and 25 in the second.In addition, Greece is a single 21-seat constituency of the European Parliament.