Ignition Switch Changeout

I'm wondering if it is possible to change the column ignition switch in my 72 Duster w/340.
It could the issue as it will not fire but, "sometimes"... when I release the switch then it seems like it wants to fire.
I know that I have seen that same issue posted but can't find it.
So, I guess I would like to start with a switch changeout within the column first.
Thanks