In other words,Baker contends,women activists were early practitioners of nonpartisan,issue oriented politics and thus were more interested in enlisting lawmakers,regardless of their party affiliation,on behalf of certain issues than in ensuring that one party another won an election.前面的几个分句都好理解,但是最后一句on behalf of certain issues than in ensuring that one party another won an election是怎么理解,这几个分句是怎样的结构,谢谢!