In 2015, Mitsotakis served as a parliamentary representative for New Democracy, representing the President of the party in Parliament, as well as the body of the party's Representatives. He was charged with expressing the positions of his party during Parliamentary procedures and discourse, as well as ensuring the proper function of Parliament through a process of checks and balances. In March 2015, he claimed that then-Minister of Finance Yanis Varoufakis was undermining the Greek negotiations over the third bailout programme, saying: "Every time he opens his mouth, he creates a problem for the country’s negotiating position."