  We describe an electoral system for distributing seats in a parliament. It
gives proportionality for the political parties and close to proportionality
for constituencies. The system suggested here is a version of the system used
in Sweden and other Nordic countries with permanent seats in each constituency
and adjustment seats to give proportionality on the national level. In the
national election of 2010 the current Swedish system failed to give
proportionality between parties. We examine here one possible cure for this
unwanted behavior. The main difference compared to the current Swedish system
is that the number of adjustment seats is not fixed, but rather dynamically
determined to be as low as possible and still insure proportionality between
parties.
