It will ALREADY BE TOO LATE by the mid-term elections in 2010. The census count will be mostly already done by then.
State elections may be just as important in mitigating the census damage, because legislatures and governors will be in charge of redistricting using the new census stats.
Gerrymandering is a fine art, and a destructive one in the wrong hands.
Well, the state legislatures will be doing the gerrymandering in 2011. And the Congress could, if the numbers were there, hold hearings, expose the (now) coming (and then past) fraud, and force a redo. (I'm dreaming, but I am talking a veto-proof Congress here).
But if we don't take everything we can in 2010, we will be gerrymandered out of power forever.