I know this is difficult to digest, but compared to a lot of the rest of the world, almost every US politician is conservative.
In regards to Portland, you almost certainly have a problem with the key points you identified, but you also have a problem with the fact that public drug use is intrinsically tied with homelessness. You can't fix one without the other. This involves (in the short term) more public housing, but for a better solution (the long term) it involves better education, welfare, health-care and social equality.
You can't try to fix one of these problems while ignoring the others. It won't work.