Blue Crab Boulevard

Well, Barack Obama is going on the offensive. The mud is flying by the bucketful.

(CNN) – Barack Obama's campaign took fresh aim at Hillary Clinton Wednesday for refusing to release her tax returns, asking in a memo circulated to reporters, "What does Clinton have to hide?"

"In the face of her unwillingness to release her tax returns, Hillary Clinton has made the false case in this campaign that she is more electable because she has been fully vetted," the memo stated. "When it comes to her personal finances, Senator Clinton’s refusal to release her taxes returns denies the media and the American people the opportunity to even begin that process."

David Axelrod, the Obama campaign's chief strategist, also said in a conference call with reporters Wednesday that Clinton has a history of non-disclosure and is the least-vetted candidate in the presidential race.

Meanwhile, the media is now beginning to ask what, exactly, is up with Obama's connection to Tony Rezko:

Accused Illinois fixer Antoin "Tony" Rezko is in debt by $50 million and relies on "family" handouts of $7,500 a month to pay monthly costs, according to a previously sealed court transcript reviewed by ABC News.

Rezko's bleak financial picture raises the question of how the Rezkos were able to buy a vacant lot adjoining the home of Sen. Barack Obama in 2005, at a time Rezko says he was already in deep debt.

Rezko also reveals in the testimony, before Judge Amy St. Eve on Jan. 16, 2007, that he already knew he was under federal investigation at the time of the land purchase and had hired a criminal defense attorney to deal with the "feds."

So we have two candidates in a virtual dead heat, with virtually no way for either to secure the necessary delegates to lock the nomination and both may have financial shadiness to deal with.

Lordy. This is better than a soap opera, isn't it? Funniest outcome: both disintegrate before the convention and the Democrats are left with no candidate. The mayhem at the convention would be hilarious. Well, the Democrats wouldn't think so. Which would make the rest of us laugh harder.