By Wojciech Kosc in Warsaw Polish Prime Minister Donald Tusk’s centre-right Civic Coalition (KO) managed to beat the radical right-wing Law and Justice (PiS) in the European election on June 9, according to a late poll. The result marks the first defeat of PiS by their arch-rivals in as many as 10 elections. But the margin of KO’s success was tiny and the overall result was marred by an excellent showing by the far-right anti-EU Konfederacja, while Tusk’s coalition partners, the conservative Third Way and the Left, fared badly. “Jesus, I’m so glad,” Tusk tweeted – citing a popular Polish rock …