The Social Democratic Party (Romanian: Partidul Social Democrat PSD) is the major social-democratic political party in Romania. The largest party in Parliament with initially 63 seats in the Senate and 158 seats in the Chamber of Deputies it also has the largest number of mayors local and county councilors and county presidents thus being the biggest and most influential political force in the country. PSD was formed in 1992 after the post-communist National Salvation Front broke apart.