11.   The Nassau seat became vacant in August with the death of Michael Tully, a seven-term Republican from Roslyn Heights.

12.   The seat became vacant after the death of Joseph Galiber in November.

13.   The seats can unexpectedly become unlocked when used as an infant carrier, causing a child to fall out.

14.   These needless seats have become the engine driving every contemporary stadium or arena proposal.

15.   This flight is for doing business, and this plane is a satellite office where seats become cubicles and rows are conference rooms.

16.   When a seat becomes vacant before the term ends, as is common, the new nominee fills out the remainder of the term.

17.   Yet when a district seat became available, Clinton declined to nominate him.

18.   A few seats have become more predictable in recent weeks.

19.   Empty seats are becoming an October tradition at Turner Field.

20.   He has been safe since, but Democrats claim that several local office holders would be interested in running if the seat became open.