The special elections to fill vacant seats in congress are fundamentally different from early general elections in a parliamentary system, in which every seat in the affected house is contested. (politics.stackexchange.com)
The administration's inability to fill vacant seats on the federal bench has both immediate and long - term effects. (sentencing.typepad.com)
It wasn't until boarding that the crew realized there was a trio of vacant seats at the back of the plane. (canadianbusiness.com)