A view from the streets of a swing state

UPPER DUBLIN, Pa. - Last April, on the eve of the Pennsylvania primary, voters in this Philadelphia suburb were finding plenty of fault with both Barack Obama and John McCain. Many were preparing to - and soon did - vote for Hillary Clinton. This week, those voters are part of a mass movement to Obama, driven by much greater familiarity with the Illinois senator's views, and a pronounced distaste for McCain and running mate Sarah Palin.

The striking shift in Montgomery County, often a bellwether, makes McCain's task of capturing Pennsylvania look almost like Mission Impossible.

Robert Stutz, a recently retired hospital administrator, was, like many of his neighbors, skeptical of both the eventual nominees when they were on the primary ballot, "so I was mostly listening to Hillary at that point."

But he's been impressed with Obama's health-care plan and says that McCain virtually disqualified himself with his vice presidential choice. "I can't imagine putting Sarah Palin in a position to be president of the United States," he said.

Rich Miles, a building maintenance man, answered the question about his voting plans with the words: "Not Obama." McCain and Palin reflect his values, he said. "They put the country first."

Whatever Palin may have done in shoring up the Republican base and securing support of people like Miles, she clearly has cost McCain votes among some well-educated suburbanites. Said Marjorie Lukens, a Republican: "The thought of Sarah Palin being a heartbeat away is terrifying."

What has changed since last spring in this suburb is both the worldview and the impression of the candidates. Back then, the economy was not a major worry and opinion was divided between McCain's stay-the-course policy in Iraq and the Democrats' withdrawal plans.

Now, economic anxieties are pervasive and Obama, whose ads are seen far more frequently than McCain's, is viewed as the one addressing those domestic problems.

Peter Wilde, a retired high school teacher, said he has decided on Obama, but "I really like John McCain, and in any other election but this one, I'd vote for him. He's a man of integrity and he speaks his mind." So, why Obama? "I think his tax plan is better for people like me, and after the last two weeks, my 401(k) is not in too good o' shape."

If McCain is losing votes for such reasons, Obama seems to have harnessed the enthusiasm of his supporters.

Debra Almack, an accountant and registered Republican, supported Mike Huckabee. After reading Obama's memoir, "Dreams from My Father," she decided he too "has a lot of character. I know he has some liberal ideas, but I really think he's pragmatic."

At the time of the primary, Obama was fighting two foes: Clinton and the voters' lack of familiarity with him. The Democratic National Convention and those ubiquitous ads have dealt with the latter problem, and Clinton was working the Philadelphia suburbs on behalf of Obama on Monday.

In early September, Obama opened a storefront headquarters not far from the library where I was interviewing voters - one of three offices in Montgomery County alone. The day after I visited, a platoon of volunteers was arriving to help local supporters canvass the same neighborhoods.

It's hard to see how John McCain can overcome these odds in Pennsylvania.

© 2008, Washington Post Writers Group