There’s no single solution to any of the issues facing modern Philadelphia, but your votes and actions can help determine the way forward. The first step in deciding where to focus your support is understanding who has the power to effect change.

That can vary greatly depending on what the topic is, and details get confusing quickly. So we’ve attempted to provide a starting point.

In a series of explainers, we’re examining several broad subjects. In each one, we broke things down in a simple, clear language. There’s info about the role of local, state and federal government regarding each issue, plus several links for further reading if you’re ready to really dig in.

Here we explain the issues around:

Have another topic you’d like us to explain? Tell us.

Looking for a guide to the candidates on Nov. 6? Find everything you need at this link.

And here’s a handy FAQ with everything you need to know about how, where and when to cast your vote on Election Day.

Danya Henninger is director and editor of Billy Penn at WHYY, where she oversees the team, all editorial decisions, and all revenue generation — including the membership program. She is a former food...