In January New Democracy was leading PASOK in opinion polls by 7%. But Papandreou's election to the party leadership allowed PASOK to regain ground. During February Papandreou campaigned on "the need for change" in Greece, hoping to neutralise the strong sentiment for a change of government. By late February New Democracy's lead in the opinion polls had been cut to 3%. The
Athens daily
Kathemerini commented: "Now, two weeks before the elections, all opinion polls show PASOK 3 to 4.5 percentage points behind ND. This raises the question of whether PASOK can snatch victory away from ND. The fact is that much is unclear. For example, although PASOK has little support, its leader has a good image in public opinion polls." The electoral campaign concluded on in the traditional manner, with huge televised mass rallies in the centre of
Athens by each of the major parties. On the evening of 4 March Karamanlis addressed an estimated 200,000 at the ND's concluding rally. PASOK claimed that twice that number attended their rally on 6 March, but these numbers cannot be independently verified. At the ND rally, Karamanlis said that PASOK had been in power too long and had grown lazy and corrupt. At the PASOK rally, Papandreou evoked the memory of his father but said that he would lead a government dedicated to reform and change, as well as action against corruption. Since publication of opinion polls is banned in the last two weeks of Greek election campaigns, it was not possible to predict the outcome of the election, except to say that ND appeared to have been leading when the last polls were published, and that most commentators expected the result in terms of votes to be close. Greek electoral law ensures, through a complex algorithm of parliamentary seat redistribution, that a party polling a plurality of the vote (that is, more than any other party but also more than 40%) is practically guaranteed a majority in Parliament. A "threshold" of 3% of the total popular vote is also required by law for a party to be eligible for representation in Parliament. This provision kept all but the four top-polling parties from securing parliamentary seats. ==Opinion polls==