The September 2015 Greek legislative election will be held on Sunday, 20 September, following Prime MinisterAlexis Tsipras' announced resignation on 20 August.[1] At stake will be all 300 seats in the Hellenic Parliament. This will be a snap election, since new elections were not due until February 2019.[2] This will be the fourth Greek election to be held in less than three and a half years.
All voters are called up to vote, with registration being automatic and voting being mandatory.[3] However, none of the legally existing penalties or sanctions[4] have ever been enforced.[5]
250 seats are distributed on the basis of proportional representation, with a threshold of 3% required for entry into parliament. Blank and invalid votes, as well as votes cast for parties that fall short of the 3% threshold, are disregarded for seat allocation purposes. 50 additional seats are awarded as a majority bonus to the party that wins a plurality of votes, with coalitions in that regard not being counted as an overall party but having their votes counted separately for each party in the coalition, according to the election law. Parliamentary majority is achieved by a party or coalition of parties that command at least one half plus one (151 out of 300) of total seats.
Poll results are listed in the table below in reverse chronological order, showing the most recent first, and using the date the survey's fieldwork was done, as opposed to the date of publication. If such date is unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the leading party's colour. In the instance that there is a tie, then no figure is shaded. The lead column on the right shows the percentage-point difference between the two parties with the highest figures. When a specific poll does not show a data figure for a party, the party's cell corresponding to that poll is shown empty. The threshold for a party to elect members is 3%.
Opinion polls showing seat projections are displayed in the table below. The highest seat figures in each polling survey have their background shaded in the leading party's colour. In the instance that there is a tie, then no figure is shaded. 151 seats are required for an absolute majority in the Hellenic Parliament. 50 additional seats are awarded as a majority bonus to the single party winning the largest share of the votes.
Polls shown below show the recording of raw responses for each party as a percentage of total responses before disregarding those who opted to abstain and prior to the adjusting for the likely votes of those who were undecided to obtain an estimate of vote share. The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the leading party's colour. In the instance that there is a tie, then no figure is shaded. The "No party" columns includes blank and invalid ballots, as well as those respondents declaring their intention to abstain as well as those that remain undecided.
^ abcdefghijklmnopqrstuvwxyzaaabacadaeafagahaiajakalamanaoapaqarasatauavThe linked core data of this poll, shows the percentage of support each party would gain among the surveyed sample of the electorate, without disregarding those who were undecided or said they would abstain from voting (either physically or by voting blank). However, in order to obtain results comparable to other polls and the official election results, the result shown in this table has been adjusted based on the simple rule of three, which mean the "group of undecided and/or abstaining voters" have been assumed ultimately to cast their votes (if any) according to the exact same distribution as the group of decided voters (having cast a specific vote in the survey). Or in other words, they are simply disregarded under the assumption they will not cause any change to the already found distribution of votes. After this calculated adjustment, the total of all noted vote shares in the table equals 100%, which is similar to how the results of the official elections are presented. This practice is done for most pollsters, as most of them use and/or have used this system in the past in order to show results comparable to other polls and election results. Exceptionally, Palmos Analysis polls are verified to use a different system than this one, and as such it should not be applied to them.
^ abcdefghijPulse RC, PAMAK and ProRata opinion polls round their data so that in the end they show a .0 or a .5 value. This practise is maintained for these polls when disregarding undecided and/or abstaining voters from the totals so as to avoid different interpretations of the same value.
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