The new governor has made a 'clean sweep' of the staff in the governor's mansion. [=the new governor completely replaced the former governor's staff]
He gave the floor/room a quick 'sweep'. [=he swept the floor/room quickly]
The election was a 'clean sweep' for local Democratic candidates.
(..) That is not true. Wait a minute. This is crazy behaviour. Can't we just laugh about all this ? Seriously. ln the huge sweep of things, this stuff doesn't matter. What he's gonna say next is there's people starving in the Sudan. Well, there are, and we don't have to go anywhere near that far. (..)1999 Notting Hill