Progressive Party gained 2.2% in the National Elections of 1956 earning no seats in the Parliament.

It participated in the National Elections of 1958 as a part of a coalition called Democratic and Progressive Agricultural Union, earning two seats.

In the National Elections of 1961, Progressive Party participated with Centre Union earning fourteen seats.

Spyros Markezinis reestablished the party in 1979 and participated in the National Elections of 1981, where it gained 1.7%.

Finally, the party gained 0.2% in the elections for the European Parliament in 1984 and it was dissolved shortly after.