South Florida Officer Killed, Becoming 4th in Six Months

An off-duty Miami police detective was shot and killed early Tuesday morning, and the authorities speculated that he may have stumbled on a drug transaction in progress.

White House Told to Answer E-Mail Query

A federal magistrate has ordered the White House to reveal whether copies of missing e-mail messages concerning the disclosure of the name of a C.I.A. operative are stored in computer backup files.

Economic Scene: McCain and Bush’s Heirs

John McCain’s economic platform contrasts sharply with his rivals’ and represents the start of a Republican response to middle-class anxiety.

An Affiliate Sues Habitat for Humanity Over a Pact

The oldest affiliate of Habitat for Humanity International has filed suit to protest a new agreement that the nonprofit housing organization is imposing on its 1,600 local chapters.

Retooled Campaign and Loyal Voters Add Up

Hillary Rodham Clinton’s victory in New Hampshire fires new life into her campaign and leaves the Democratic Party with the tightest of horse races.

News Analysis: Clinton Escapes to Fight Another Day

Registered Democrats and women solidly supported Hillary Rodham Clinton in her primary victory.

Women Backed Clinton, Exit Polls Show

In contrast to polling results in Iowa, Democratic women in New Hampshire rallied around Senator Hillary Rodham Clinton.

He’s Staying in Campaign, Edwards Tells Supporters

John Edwards repeated his determination to stay in the race, despite his distant third-place showing in the New Hampshire primary.

McCain’s Victory Muddles G.O.P. Field as It Looks to Michigan

The G.O.P. battle now shifts to states where each leader believes he has advantages.

From a Big Boost for Obama to a Sharp Blow

Senator Barack Obama’s narrow defeat to Senator Hillary Rodham Clinton on Tuesday ensured that the fight for the Democratic presidential nomination remains fully engaged.

Campaign Notebook: A Parade! A Circus! A Carnival! Or, the New Hampshire Primary

There is no better place to absorb New Hampshire on Primary Day than on Elm Street, the main thoroughfare in downtown Manchester.

A Show of Emotion That Reverberated Beyond the Campaign

When Hillary Rodham Clinton choked up in New Hampshire, she prompted one of the most debated moments of the campaign.

Despite Early Results, News Outlets Let Caution Rule on Calling Winner

With raw memories of past miscalls, news outlets like CNN were careful to avoid calling the race too soon.

National Briefing | Washington: Appeal Dropped in New Forest Rules

The Bush administration has dropped its appeal of a 2007 court decision that overturned new management rules for 191 million acres of national forests.

National Briefing | West: Nevada: A Shift at Yucca Mountain

The Energy Department is cutting operations at the desert site where the government plans to build a national nuclear waste repository.