Original: From 1988 to 1993 he served as Minister of the Interior and in May 1993, the Bavarian Landtag (parliament) elected him as minister-president succeeding Max Streibl.
Simplified: From 1988 to 1993 he was the Bavarian Minister of the Interior and in May 1993, the Bavarian Landtag (parliament) elected him as minister-president.