The SPD had a huge comeback and the CDU\/CSU got less votes . Both the SPD and CDU\/CSU had 38.5 % of the vote , but the SPD was ahead by 6,000 votes . The SPD had mounted a huge comeback , and the CDU\/CSU was narrowly defeated ( though both the SPD and CDU\/CSU had 38.5 % of the vote , the SPD was ahead by a small 6,000 vote margin ) .