2003 Itasca DP does not always start

Checked it our again today, it starts on the first try less than 1/2 the time. Most of the time if it did not try to start it will work the next time you try it or if you just hold the key. On a few occasions it took 4 or 5 attempts before it started. If the lights are on they do not dim if it does not start.
The battery connections checked out ok.

I am leaning towards a bad ignition switch. Tomorrow I will see what the Freightliner dealer has to say.