I'd have to think it through more, but my gut says that I don't care if the bet is secret. Although I would separately support a law that all elected officials must have extreme transparency into their finances.

I think people should give up all of their right to privacy (when it comes to business, finances, travel, and even conversations) when they acquire a large amount of power. In my head, a US senator would have that much power and that little privacy, whereas a US representative in the House would not.