Dear Senator Obama ...

Four months ago, you took the political world by storm in Iowa. The media were agog. They called your words "gorgeous," your victory "a message to the world." You "made history" and Americans could "look at ourselves with pride" in "a moment to marvel."

Times change. The six weeks leading into Pennsylvania were difficult. You excelled at raising money and gaining endorsements, but got weaker as big problems emerged. Before you can fix them, you must understand them. In Pennsylvania, you won only 30 percent among Catholics and 29 percent among white working-class voters. Defections like this elect Republicans.

Even liberal commentators who adore you warn you can't win with a McGovern coalition of college students and white-wine sippers from the party's left wing. Saying small-town voters cling to guns, faith and xenophobia because of economic bitterness hurt you; it reinforced the growing sense you don't share Middle America's values. So did asking about the price of arugula in Iowa, dismissing the "true" patriotism of people who wear a flag lapel pin, being "friendly" (as your chief strategist, David Axelrod, put it) with a violent, unrepentant '60s radical and having a close relationship with an angry pastor who expressed anti-American sentiments.

You argue the son of a single working mom can't be an elitist. But it's not where you start in life; it's where you end up. After a prestigious prep school, Columbia and Harvard, you've ended up with the values of Cambridge, San Francisco and Hyde Park. So you're doing badly in Scranton, Youngstown and Erie, where ordinary Americans live.

HERE ARE SIX SUGGESTIONS FOR WHAT TO DO.

1. Your stump speech is sounding old and out of touch. You made a mistake by not giving the bored press (and voters) something new last Tuesday when you lost Pennsylvania. Come up with something fresh that's focused on the general election. Recapture the optimistic tone of your start and discard the weary, prickly and distracted tone you've taken on.

2. When you get into trouble, pick one, simple explanation. And stay with it. Take the Rev. Jeremiah Wright Jr. You said you weren't sitting in church when he said those ugly things. Two days later, you excused him, saying his comments didn't give "a well-rounded portrait" of him. Two days after that, you condemned his statements as "not only wrong but divisive" but still couldn't "disavow him" any more than you could your grandmother. Ten days later, you implied if Wright hadn't retired, you might have left his church. It would have been better to say from the start that Wright's words were wrong and offensive and you should have spoken out earlier. The applause would have been deafening.

3. Your lack of achievements undercuts your core themes. It's powerful when you say America is not "Red States or Blue States but the United States." The problem is, you don't have a long Senate record of working across party lines. So build one. In the coming months, say that you'll appoint Republicans to your cabinet and get a couple to say they'd serve. Highlight initiatives Republicans can agree on. Most importantly, push for a bipartisan issue now before Congress.