[4] The New Democracy of Prime Minister Kyriakos Mitsotakis achieved an unexpected victory defying the opinion polls and winning in a landslide.

[6][7][8] On 24 May 2023, as required by Greece's constitution, President Katerina Sakellaropoulou appointed Ioannis Sarmas to be the caretaker prime minister for the interim.

[citation needed] New Democracy campaigned on reform and opening of Greece worldwide, while associating Syriza, the rival party, with populism.

[27][28] Syriza's campaign focused on the 2022 wiretapping scandal, blaming New Democracy for the inadequate safety measures that resulted on the Tempi rail crash,[29] as well as the housing crisis, the problems of the middle class, the lack of trust of the citizens in Mitsotakis, and other issues.

[citation needed] PASOK, once one of the two main parties, had a campaign focusing on meritocracy, green transition, a strong healthcare system and transparency.

[30][31] It opposed the border disputes with Turkey and any other country, which, according to the Communist Party, were encouraged by NATO, the United States, and the European Union.

It supported public education, the legalisation of illegal migrants living and working in the country, as well a free health system.

[32] Greek Solution supported economic patriotism, structural changes in the economy in order to reduce the dependency on tourism, the expansion of the territorial waters to 12 miles from the coast, green transition and the exploitation of the country's natural resources.

[33] MeRA25 supported a "break off from the Brussels directives and the interests of the oligarchy", the introduction of a free savings system (Dimitra), the abolition of mandatory conscription, and a change in the status of NATO membership for Greece.

On 29 April, a cross-party meeting chaired by interim Interior Minister Calliope Spanou reached an agreement to hold a six party leaders' debate on 10 May.

The first (1st) theme concerned: Economy, Growth and Development, the second (2nd): Foreign policy and Defense, the third (3rd): State, Institutions and Transparency, the fourth (4th) Health, education and social welfare, the fifth (5th) Energy and the Environment, and the sixth (6th): New Generation (i.e., the youth).

[42] The journalists asking the questions were Sia Kosioni, Antonis Sroiter, Mara Zacharea, Rania Tzima, Panagiotis Stathis and Georgios Papadakis.

With half of votes counted, ruling New Democracy secured more than 40 per cent, building a lead of around 20 points over its nearest rival, Alexis Tsipras's Syriza party.