Packed with biography, campaign promises and attacks on her Republican rivals, a new 60-second ad from Hillary Clinton, titled “This House,” offers what sounds like her closing argument to Iowa Democrats, asking them to vote for her on Feb. 1. A similar ad with a different ending will be shown in New Hampshire.

On Screen

Opening on the White House, the ad shows a sweltering industrial plant, a fighter taking off from an aircraft carrier and a family of four sitting down to dinner. “The person who lives here,” a male narrator intones, “has to solve problems as big as the world and as small as your kitchen table.”

Viewers are taken on a quick tour of Mrs. Clinton’s extended career in public service: surrounded by children as first lady, when she “helped get health care for eight million kids”; as a senator from New York, standing grim-faced in a trench coat amid the debris at ground zero, where, the ad says, she “helped a city rise again”; and speaking soberly to an attentive President Vladimir V. Putin of Russia, as the voice-over says she has “stared down hostile leaders around the world.” She is seen on the campaign trail and in the Situation Room with President Obama as the ad calls her the “one candidate for president who has everything it takes to do every part of the job.”

The ad rattles off Mrs. Clinton’s touchstone promises: to defend Social Security and Medicare against privatization, protect Planned Parenthood from shutdown, “take on the gun lobby” and “finally get equal pay for women.” Clips of a shouting Donald J. Trump and of Senator Ted Cruz of Texas aiming an assault weapon at a gun range symbolize the threat as the narrator says Mrs. Clinton will “stop the Republicans from ripping all our progress away.”