The Finnish parliamentary election is today. The expectation from pre-election polling is that the center-left parties may make gains. The result may be close enough for regional variance in party strengths to matter to the outcome, as was the case in 2007. Since then, the electoral system has been modified slightly, with some smaller-magnitude districts merged. Thus regional variance should not matter as much as it did then.
The system is districted open-list PR, so candidates matter greatly, and the system permits multiparty alliance lists (which need not have the same combinations in all districts).
(A more substantial electoral reform, with nationwide compensation, was proposed after 2007. But it did not pass.)