By JONATHAN MARTIN

Powered by support from evangelical Christians, Senator Ted Cruz’s victory threw into question the depth of support for Donald J. Trump.

Clinton and Sanders Locked in Tight Race

By PATRICK HEALY

Hillary Clinton’s support from women and older voters was matched by the liberal foot soldiers that Senator Bernie Sanders called to revolution.

Comments

News Analysis

Divided Iowa Voters, United in Fury

By MICHAEL BARBARO

Monday’s results showed a shared impatience with what voters see as a rigged system.

IOWA ENTRANCE POLLS

Voters for Hillary Clinton and Bernie Sanders were divided by age and diverged over the issues of electability and trustworthiness.

Clinton: Patrick Semansky/Associated Press. Sanders: Evan Vucci/Associated Press.

IOWA ENTRANCE POLLS

Voters for Hillary Clinton and Bernie Sanders were divided by age and diverged over the issues of electability and trustworthiness.

Voters aged 65 and over

Voters aged 17-29

69%

Can win in November

Honest and trustworthy

IOWA ENTRANCE POLLS

Ted Cruz fought off attacks by Donald Trump to win conservatives, but more Iowans viewed Marco Rubio as electable in November.

Trump: Larry W. Smith/European Pressphoto Agency. Cruz: Chuck Burton/Associated Press. Rubio: Scott Olson/Getty Images.

IOWA ENTRANCE POLLS

Ted Cruz fought off attacks by Donald Trump to win conservatives, but more Iowans viewed Marco Rubio as electable in November.

Very conservative

Tells it like it is

Can win in November

43%

●

The Opinion Pages

Editorial

Moving Beyond Iowa

With Cruz’s beating of Trump, voters can only hope that after Iowa the presidential campaign will move toward issues and ideas.

Op-Ed Columnist

Donald Trump Isn’t Real

By DAVID BROOKS

The Iowa vote shows some version of normalcy returned to the G.O.P. race and the vulnerability of the showbiz candidate.

The Conversation

A Triumph for Ted Cruz

By ARTHUR C. BROOKS and GAIL COLLINS

A surprising year just got more surprising. But how much does Iowa actually matter?

Campaign Stops

You Didn’t Win Iowa. Now What?

By EMMA ROLLER

Advice for the election season’s first batch of also-rans.

How Both Parties Lost the White Middle Class

U.S. to Send Heavy Weapons to Europe to Deter Putin

By MARK LANDLER and HELENE COOPER

The move by President Obama is intended to signal to President Vladimir V. Putin of Russia that the West remains deeply suspicious of his motives.

Comments

Eastern Europe Cautiously Welcomes Plan 7:52 AM ET

Zika Virus Is Global Emergency, World Health Group Says

By SABRINA TAVERNISE and DONALD G. McNEIL Jr.

The declaration by the World Health Organization is a rare move that signals the seriousness of the outbreak and gives countries powerful new tools to fight it.

Comments

Your Tuesday Briefing

By ADEEL HASSAN 9:48 AM ET

Here’s what you need to know to start your day.

New York Today: City Slickers

Super Bowl 50

Out of a Rare Super Bowl I Recording, a Clash With N.F.L.

By RICHARD SANDOMIR 5:00 AM ET

Troy Haupt owns the only known recording of the 1967 broadcast, but it might never be seen because the league doesn’t want to buy the tapes or let him sell them to outside parties.

Tuesday Morning Quarterback: Super Bowl Preview 8:07 AM ET

Medication May Prolong Conductor’s Tenure at the Met

By MICHAEL COOPER

A neurologist treating James Levine, the music director at the Metropolitan Opera since 1976, said an adjustment to his treatment for Parkinson’s disease may save him from retirement.