How Hillary Clinton Picked Tim Kaine for Running Mate

Inside Hillary Clinton's vice presidential selection process.

Then, Clinton started reading.

Clinton and Kaine appeared together last week at an event in northern Virginia, where the down-to-earth, Spanish-speaking former governor impressed her on the stump.

After their joint rally, Clinton invited Kaine to her home in northwest Washington, DC, where they spoke privately and huddled with Clinton's aides for 90 minutes.

Throughout the process, even as he emerged as Clinton's favorite, the Virginia senator consistently downplayed the vice presidential speculation after his 2008 vetting by the Obama campaign -- as well as his ability to serve.

"Nobody should ever say they're ready for the responsibility because it is so, so huge," Kaine told NBC in late June when asked if he'd be prepared to serve as president.

"I am boring," he also admitted in the interview. "But boring is the fastest-growing demographic in this country."

It was Kaine's steadiness that impressed Clinton most, according to campaign sources -- a confidence in his ability to work alongside her in the White House on Jan. 21, 2017.

But it would be another six days before Clinton settled on Kaine. As Clinton and Democrats watched the often-tumultuous Republican National Convention unfold, Kaine spent the week dodging reporters as he attended constituent events across Virginia.

On Friday afternoon, Clinton walked backstage after a rally in Tampa and made her pitch to Kaine over the phone.

Just before 8 p.m., Clinton and Podesta informed the other candidates that they were not selected in a series of phone calls. As the clock ticked, Clinton's official selection stayed under wraps, to the surprise of those familiar with the often-leaky process.

The campaign officially announced the news Friday night in a text message to supporters.

Clinton's controlled, methodical rollout sharply contrast with Donald Trump's, who had second thoughts about his selection of Pence even after offering him the job and flying him out to New York City.

Trump's offer was reported hours before he officially announced the news in a tweet last Friday morning.