SYRIZA MP Tryfonas Alexiadis, 60, was rushed to an Athens hospital on Tuesday after fainting during a meeting of his party's parliamentary group in a House chamber.
Alexiadis, who served as alternate finance minister in the SYRIZA government under Alexis Tsipras, was given first aid at the scene by lawmakers Pavlos Polakis and Yiannis Mouzalas, who are physicians.
The decision by Alexis Tsipras and Fofi Gennimata to endorse Katerina Sakellaropoulou for the position of president of the Republic guarantees that the senior judge will be elected with a comfortable majority to the highest position of state in the first vote to be held in Parliament six days from now.
The prime minister's decision to nominate Ekaterini Sakellaropoulou to serve as President of the Hellenic Republic did not startle those in the know.
For months most had known that Mr. Mitsotakis had singled out the chief justice of the Council of State and had included her in the pool of candidates for the highest office in the land.
Prime Minister Kyriakos Mitsotakis has nominated Ekaterini Sakellaropoulou, the first woman chief justice of the Council of State, to be the first woman president of the Hellenic Republic.
The surprise nomination was announced by the PM in a nationally televised address on the evening of 15 January.