Is there a danger if I put so much into my CPF? What happens if there is a change in political power? Will it affect my CPF?

Unlikely the government will just take your money; too much push back for that to happen.

However, if you are doing long term planning based on rules now; do note they could be adjusted - eg you might be thinking no problem to meet FRS until recently announced increase and so you would need to change your plans to suit.

Nothing is certain in investment. The political parties or climate may change. The interest rate of 2.5% for OA, 4% for MA and SA could also drop. Anything could happen and there is why you need to diversify your risk. Nonetheless, it is still better to build up your CPF because the risk is lower compared to other investment instruments. Just my humble opinion.