The editors of the Nation endorse Barack Obama.

As this year's front-loaded primary calendar took shape, capped off with the February 5 Super-Mega-Duper Tuesday, many voters once again resigned themselves to watching from the sidelines as a few early states got the privilege of choosing the party's nominee. Yet despite a schedule tailor-made to benefit the establishment candidate and confer an early victory, we are, somewhat miraculously, in the midst of the most contested primary race in 24 years. We are all Iowans now.

This state of affairs is thanks almost entirely to the campaign of Barack Obama, who, because of his background and his relatively brief time in the national spotlight, is a truly improbable contender for the presidency. This magazine has been critical of the senator from Illinois for his closeness to Wall Street; his unwillingness to lay out an ambitious progressive agenda on health care, housing and other domestic policy issues; and for post partisan rhetoric that seems to ignore the manifest failure of conservatism over these past seven years. But as Christopher Hayes argued in our cover story last week, Obama has also exhibited a more humane and wise approach to foreign policy, opposing the Iraq War while Hillary Clinton voted for it, and has been a reliable progressive ally over the course of his career. While his rhetoric about "unity" can be troubling, it also embodies a savvy strategy to redefine the center of American politics and build a coalition by reaching out to independent and Republican voters disgruntled and disgusted with what the Bush era has wrought. Most important, we feel his candidacy, in its demonstrated investment in organizing and grassroots activism as well as his personal appeal, represents the best chance to forge a new progressive majority. For these reasons we support Obama for President.

And the groundswell just keeps rising.