It's impossible to say without any background information, but my guess is that this is a political context. The speaker may be telling a politician ( for example, a presidential candidate) about his or popularity with potential voters. 'Pulling' probably means 'gaining support', and 'minorities' could mean voters from minor ethnic populations: for example, in the US this would refer to African Americans and Hispanic citizens. In future, please give more context!

https://www.macmillandictionary.com/dictionary/american/pull_1#pull_1__31 senses 8 and 8a