1.   Although the airwaves are already crowded with newsmagazines, CNN officials insisted there is room for even more.

2.   But while Bart, Homer, and Marge are still crowding the airwaves, their plane is not.

3.   Judging talent from one vocal group to the next is tricky business, thanks to the numerous acts crowding the airwaves.

4.   With about six weeks to go, the candidates are crisscrossing the country and crowding the airwaves while trying to win votes.

5.   Not to be outdone, conservative groups have crowded the airwaves with biting ads designed to help Republicans capture the Congress and White House.