Sen. Barack Obama Speaks at Campaign Event in Green Bay, Wisconsin

When it comes to taking on the special interests, my opponent sounds like Fighting Bob Lafollette. But he acts like a guy who's spent three decades of his life in Washington. He's put seven of the biggest corporate lobbyists in charge of his campaign - lobbyists for the insurance industry and the oil industry; for foreign governments and Freddie and Fannie Mac, who paid his campaign manager nearly $2 million to defend them against stricter regulations. I guess they got their money's worth.

And rest assured, those lobbyists who are working day and night to elect my opponent aren't doing it to put themselves out of business.

When it comes to reforming government waste and spending, Senator McCain talks a lot about earmarks. And while he deserves credit for not requesting many of those earmarks during his time in Congress, what he never mentions is that he voted for 144 billion dollars worth in just six years; or that he voted for four out of the five Bush budgets that have been filled with special interests giveaways and left us with the largest deficit in history.

The truth is, our earmark system in Washington is fraught with abuse. It badly needs reform - which is why I didn't request a single earmark last year, why I've released all my previous requests for the public to see, and why I've pledged to slash earmarks by more than half when I am President.

But let's not pretend, as John McCain does, that proposing the elimination of 18 billion dollars of earmarks will make up for the more than 300 billion additional dollars he wants to spend on tax breaks for big corporations and multi-millionaires that don't need them and weren't asking for them - more than 300 billion dollars at a time when taxpayers are being asked to help finance two wars and a historic financial bailout. That's some pretty creative math, but it doesn't add up to is change. And change in Washington is what we need right now.

This change will not be easy. It will require reforming our politics by taking power away from the lobbyists who kill good ideas and good plans with secret meetings and campaign checks. It will require reforming our government by taking on the spending habits of both parties and going after the tax havens and loopholes that big corporations use to avoid paying their fare share while you pay more. And it will require reforming our out-dated, unfair regulatory system that favors Wall Street over Main Street but has ended up hurting both.