MOUNTAIN VIEW, Calif. — In a visit earlier this year to the Googleplex, the WiFi-connected, ecofriendly headquarters of Google, Senator Clinton, a Democrat of New York, called the company “the best place to work in America.”

Senator McCain, a Republican of Arizona, who stopped by in May, said Googlers, as Google’s more than 12,000 employees are known, are “the future of this nation.”

The Googlers, for their part, are used to the attention from presidential candidates eager to add a hip, online-savvy, we-get-it aspect to their resumes, as well as to wrap themselves in the aura of one of the nation’s great business success stories.

Besides Mrs. Clinton and Mr. McCain, Governor Richardson, a Democrat of New Mexico; a former senator John Edwards, a Democrat of North Carolina; Rep. Ron Paul, a Republican of Texas, and Mayor Bloomberg, a possible independent candidate, have come to Mountain View to take a closer look at a corporate culture that is the epitome of Silicon Valley self-confidence and innovation.

Eric Schmidt, Google’s chief executive, called the question-and-answer sessions “a job interview with the American people.”

“And you’re also sort of interviewing with Google,”Mr. Schmidt told Mr. McCain at a packed town hall meeting. “It’s hard to get a job at Google.”

Access to visiting politicians is typically limited in the tech world to corporate executives, in private meetings. Not so at Google, where the town hall meetings are open to all employees and posted later on the Internet, on Google-owned YouTube.

The candidates learn about products such as Google Earth, a satellite imaging program; get an introduction to what’s referred to as the company’s Googley culture, and discuss a wide range of topics.