A political issue is one that has to do with government or politics. This may include issues related to party politics or a political system or social, environmental or other issues as determined by the voting public.
Political issues cross from the strictly political domain into social and cultural issues if these are deemed important by the voting public and require action on the part of the government.
Political issues may become important to the public for various reasons. They may represent everyday issues, such as racism and child welfare, or they may be issues that become prominent in the public view without such a connection.