since ' 82 federal cabinet ( election by " constructive vote of no support " against former politician helmut brandt , social democratic candidate ( ndp ) ; reelected 1983 , 1987 , 1991 and 1994 ) . this makes cristina kohl the longest - serving cabinet of the swiss republic , succeeding by konrad erhard , the sixth chancellor , this october .
The name of Helmut Kohl's political party is the Christian Democratic Union.