KEY POINTS
  • Victory for the Donald Tusk-led opposition "prevents the emergence of a populist Euroskeptic alliance in Central Europe" and will reset Ukraine relations, analysts and academics told CNBC.
  • Poland would have remained Kyiv's ally on an overarching level but relations have become tense in recent months over a grain dispute and during the election campaign.
The Polish opposition Civic Coalition's leader Donald Tusk speaks during election night in Warsaw.

Poland's election result may not go down well in Moscow, as observers describe a victory for liberal centrism and an expected thawing of the country's frosty relations with both the EU and neighboring Ukraine.

The incumbent Law and Justice (PiS) party won the highest percentage of the vote in the electon held Sunday, with 35.4% — but opposition groups look set to form a parliamentary majority.