@aureliano he needs to score points with them because he's an idiot who lives on attention. He needs their attention. It's what fuels him.
And in return that's how conservatives are using him to troll the rest of the country.
You're probably saying he doesn't need to score points with his base in terms of winning the election, but this is critical, it's not about winning the election to them. It's about fighting, not winning.
If Republicans wanted to win they would have nominated someone with more of a chance to win. No, nominating Trump is not about winning, that's not their priority. They want to fight, to throw their punk tantrum against The Man that they think has failed them.
And that's why Trump needs to score points with them: to get the attention that they're using to get him to be ugly to the rest of us.