De or het stembeheersing?

The correct Dutch article is:

de stembeheersing

Rule Words ending in -ing: almost always de. See the rule

How to use stembeheersing

the stembeheersingde stembeheersing
this stembeheersingdeze stembeheersing
that stembeheersingdie stembeheersing
our stembeheersingonze stembeheersing
your stembeheersingjouw stembeheersing
every stembeheersingelke stembeheersing
which stembeheersing?welke stembeheersing?
a big stembeheersing / the big stembeheersingeen grote stembeheersing, de grote stembeheersing