Add missing `n` for Sentio polls
Add missing `n` for YouGov
Add missing `n` for Skop
Add missing `n` for Ipsos
Add missin `n` for demoskop
Merge pull request #22 from urdh/missing-n

Add missing `n` data
Merge pull request #25 from urdh/december-polls

Opinionsundersökningar från veckan