While I think it's great that there is an openly bisexual govenor in Oregon, that's not what the best news would be.
According to USA Today, "[Kate Brown's] sexuality has never been a prominent issue in Oregon," and that's how it should be. Sexuality may help define a person, but it shouldn't be used to define your opinion of them or their politics.
But the best news... The best news would be if there was no furor over it. A constituency elects an official, and their sexuality never enters the conversation.