Emphasize things in your platform a constituency might like, keep quiet about things they might not like.
It’s called successful politics.
When Rand Paul was campaigning for Romney, he was telling libertarians that he wanted to change the party platform, as did Mitt Romney.
For example: “I think that the Republican Party, in order to get bigger, will have to agree to disagree on social issues,” Paul advised. “The Republican Party is not going to give up on having quite a few people who do believe in traditional marriage. But the Republican Party also has to find a place for young people and others who don’t want to be festooned by those issues.”