Again, a contradiction in terms. A carpetbagger invites himself. Illinois has chosen Keyes.
You can't be drafted to run for the Senate
Then what was the "Draft Ditka" movement of a few weeks ago?
Maybe you don't understand how it works. When the nominee of the party steps down and leaves a vacancy, the party must pick a replacement. If they choose someone who has not entered the race, that's called drafting. That's what happened here.
No it's not a contradiction in terms. Unless they're running the campaign entirely without his approval then he is indeed being a carpetbagger. He doesn't live there, he shouldn't run there, and they shouldn't vote for him there.
At least Ditka once lived there. Though it was still a dumb move since he didn't live there anymore.
Running for office is still a voluntary thing, he can step down, and he should. You cannot be drafted to run for office, selective service is for military only, not for elected office.