Madigan has officially lost his majority in the Illinois House, at least by a few votes.
That's going by those who have publicly said they're unwilling to vote for him as speaker.
That's not "officially" then. That's "unofficially".
One would presume 18 House Dems going on record as not being in favor of voting for him is more official than unofficial. This isn't anonymous reporting about their intentions, these are statements/quotes/press releases from them directly.
This is politics. An arm twist here, a committee leadership there, who knows what can happen.