It's too early to pop the champagne to celebrate his retirement, because Hastert may be lining up to screw conservatives again. It is being rumored that Hastert may resign in November to ensure succession by his hand-picked (and liberal) associate.
From Evans-Novak Political Report (via Politico.com):
According to the Evans-Novak Political Report, former House Speaker Dennis Hastert (R-Ill.) will be resigning from Congress in November, instead of retiring at the end of his term. If true, this could have significant ramifications in determining his successor.Conservative state Sen. Chris Lauzen is Oberweis’ main challenger, but he has feuded with Hastert in the past. Several Illinois Republicans speculate that Hastert’s decision to resign stems from wanting to help Oberweis win the nomination. [emphasis added]
A shortened special election campaign would likely benefit the candidates with the highest name recognition and the deepest pockets. Among Republicans, that status belongs to dairy owner Jim Oberweis, who has run unsuccessfully in three previous statewide bids for governor and for the Senate.