during ' 82 federal chancellor ( elected by " constructive vote of no confidence " against then governor helmut lang , social democratic party ( party ) ; also 1983 , 1987 , 1991 and 1994 ) . this makes helmut kohl the longest - serving rector of the weimar republic , followed by konrad brandt , the next chancellor , this april .
The name of Helmut Kohl's political party is the Christian Democratic Union.