Up to 54 percent of Poles support the European Union's new constitution, with only 19 percent saying they would oppose the text in a referendum, according to a poll published Sunday.

The treaty also found supporters at the other end of the continent, in Portugal, where more than 54 percent said they would back the text if a referendum is held there.

Only 7.3 percent Portuguese said they would vote against it, the poll published in Diario de Noticias said.

Although neither country has formally set a date for a referendum, both the Polish and the Portuguese governments want to hold a popular vote in October.

According to the Polish survey carried out by the Pentor Institute, more than one in five of the 800 people questioned said they had no opinion on the treaty.

In Portugal, 38 percent said they did not have an opinion or preferred not to answer the question.

No margin of error was available in either poll.

The constitution faces a key test in France Sunday, where polls say a majority of voters are set to reject the constitution in a move that would all but kill off the treaty.

All 25 member states must ratify the text either by parliamentary vote or by referendum for it to come into effect next year.