WASHINGTON — When Elaine Ellis began her rounds as a New York nursing assistant one morning this spring, she had an improbable companion: John Edwards, the Democratic presidential candidate, who had accepted a union invitation to spend the day with a low-wage worker.

When Ohio steelworkers went on strike last fall to protest a plant closing, who joined their rally? John Edwards.

Next month, low-income survivors of Hurricane Katrina will have another visit from former Sen. Edwards (D-N.C.), who announced his presidential campaign amid the storm rubble of New Orleans.

For more than two years, Edwards has been methodically building his campaign around an issue long shunned by leading Democratic candidates: the plight of the poor and working class. He has backed up his public appearances with unusually detailed proposals to provide universal healthcare, raise taxes on the rich and eliminate poverty over the next 30 years.

“This is a huge moral issue facing the country,” Edwards said in a telephone interview as he headed into a Memorial Day weekend campaign swing through Iowa. “I don’t see in polls that it is a driving issue [for voters], but it is for me.”

Of course, any establishment media article on poverty and politics wouldn’t be complete, er, "balanced," if it didn’t raise the specter of "class warfare":

But Edwards’ 2008 strategy carries risks, in part because it speaks most directly to a slice of the electorate that has notably little political clout. Perhaps the last major presidential candidate to make fighting poverty a central theme was Sen. Robert F. Kennedy (D-N.Y.) in 1968, before his assassination that June. Some analysts warn that an agenda that might suggest “class warfare” risks alienating middle-class swing voters and moderate Democrats who do not want to revive criticisms that theirs is the party of the poor.

Now, as anyone with sufficient sense knows, there’s "class warfare" going on… just ask Warren E. Buffett:

Mr. Buffett compiled a data sheet of the men and women who work in his office. He had each of them make a fraction; the numerator was how much they paid in federal income tax and in payroll taxes for Social Security and Medicare, and the denominator was their taxable income. The people in his office were mostly secretaries and clerks, though not all.

It turned out that Mr. Buffett, with immense income from dividends and capital gains, paid far, far less as a fraction of his income than the secretaries or the clerks or anyone else in his office. Further, in conversation it came up that Mr. Buffett doesn’t use any tax planning at all. He just pays as the Internal Revenue Code requires. “How can this be fair?” he asked of how little he pays relative to his employees. “How can this be right?”

Even though I agreed with him, I warned that whenever someone tried to raise the issue, he or she was accused of fomenting class warfare.

“There’s class warfare, all right,” Mr. Buffett said, “but it’s my class, the rich class, that’s making war, and we’re winning.”