Luxembourg voters will cast ballots Sunday in a referendum on the European Union's troubled constitution.
Prime Minister Jean-Claude Juncker, who has been a strong promoter of passage of the constitution, has threatened to resign if Luxembourg voters reject it.
A June opinion poll showed 45 percent of respondents oppose the constitution.
The Luxembourg vote comes despite the postponement of referendums in Britain, Denmark, Portugal, Sweden and Finland. French and Dutch voters rejected the constitution in referendums, placing the future of the pact in doubt.
EU leaders put the constitution issue on hold at a meeting last month in response to the rejections.
The constitution requires unanimous backing from all 25 member nations. So far, 11 countries have ratified the document.
Some information for this report provided by AP and AFP.