Hastert to announce resignation today

That's what Fox and Politico are saying. (A quick search of the Sun Times and Trib showed nothing.) Here's from Fox,

Former House Speaker Dennis Hastert will resign his seat in Congress later this year, and not serve out the remainder of his term, FOX News has learned.

The Illinois Republican has informed the House GOP leadership of his early departure, according to Republican sources. No date has been chosen for a formal announcement, which was originally scheduled for Thursday, sources told FOX News, but the resignation is expected to become effective in December or January.

Hastert's leaving in the middle of the 110th Congress means his Illinois district will have to hold a special election, one more likely to favor a GOP candidate since the party is expected to be more adept at turning out voters in a low-turnout special election.

Update: IR has it too from Crains with this comment on funds raised to date.