> you need to ensure that you cultivate the support of both parties

I'm not sure that that's possible. If someone is motivated by religion or finance to believe something that's simply not true, and your scientific evidence contradicts them, there's a fundamental misalignment. They won't support you, because the real-world evidence contradicts their beliefs, and you're bringing more real-world evidence.

On issues of climate change, evolution, age of the universe, etc., the hard science just straight up disagrees with conservatives. I don't see a way around that.