What was the shared concern of democrats and republicans over oklahoma statehood
a: increased numbers of non voting representatives in congress

b: the possibility of native american voters

c: diminished power of their own political party

d: presidential disapproval and overhaul

A. Increased numbers of non voting representatives in Congress

In 1800 Oklahoma had a large Native American population, they started demanding government representation. Later Congress established  the Oklahoma and Indian Territories, and provited a non-voting delegate to the house.