CREATE TABLE table_5595 ("Date Released" CLOB, "Institute" CLOB, "Socialist" CLOB, "Social Democratic" CLOB, "Green-Communist" CLOB, "Left Bloc" CLOB, "People's Party" CLOB, "Lead" CLOB)

Name the people's party for social democratic of 30.1%
SELECT "People's Party" FROM table_5595 WHERE "Social Democratic" = '30.1%'
SELECT "People's Party" FROM "table_5595" WHERE "Social Democratic" = '30.1%'