From en.wiktionary.org:
** English
*** Pronunciation
- [en]
*** Verb
[sweep < ,,swept> the board]
1. [en] To win all the prizes in a competition.
2. * [en]
3. * {{ quote-journal | en | title=Oscars 2015: 10 things we learned | work= [The Guardian] (London) | date=23 February 2015 | url=http://www.theguardian.com/film/filmblog/2015/feb/23/oscars-2015-10-things-we-learned
|passage=It’s always fun when something massive comes along and SWEEPS THE
BOARD, giving everything else a thoroughly good kicking – think _Titanic_,
_The Silence of the Lambs_, or _Lord of the Rings_. There’s a sort of
deranged, gluttonous feeling, a perverse glee in seeing so many dreams
trampled on by a massive cultural juggernaut.}}
1. [en] To take all of the card s.
2. [en] To get enough votes in an election to gain all the seat s.