PRAGUE, Czech Republic (Reuters) -- Czech voters face weeks of political uncertainty or even fresh elections after delivering a deadlock between center-right and leftist parties in weekend general elections.

Full preliminary results showed the opposition Civic Democrats won the biggest share of the popular vote but not a majority in the first elections since the ex-communist nation joined the European Union two years ago.

The conservative party and its two smaller centrist allies, the Greens and Christian Democrats, would hold 100 seats in the 200-member lower house -- the same as the ruling Social Democrats and far-left Communists.

(Uh-oh, we're in trouble)