In 2022, elections for the Maryland State House, US Congress and County Councilmanic districts will all change. The District you ran in 2018 may not be the same district. How is a candidate to plan to run when lines haven’t been drawn? Well, for a good majority your district will at least change slightly.
With that said, there is nothing preventing you from working on the nuts and bolts of politics. There are several things you can do before you know your district lines.