Hillary Clinton named Senator Tim Kaine of Virginia to be her running mate Friday, selecting a battleground-state politician with working-class roots and a fluency in Spanish, traits that she believes can bolster her chances to defeat Donald J. Trump in November.
Mrs. Clinton’s choice, which she announced via text message to supporters, came after her advisers spent months poring over potential vice-presidential candidates who could lift the Democratic ticket in an unpredictable race against Mr. Trump.
In the end, Mrs. Clinton decided that Mr. Kaine, 58, a former governor of Virginia who sits on the Senate Foreign Relations Committee, had the qualifications and background, and the personal chemistry with her, to make the ticket a success.
Tim Kaine's regular-guy presence may also help balance the perception of Hillary Clinton as chilly.
Hillary Clinton has chosen Sen. Timothy Kaine (Virginia) as her vice-presidential running mate, completing a Democratic ticket that prizes experience and traditional notions of public service in a political year dominated by Republican rival Donald Trump's unorthodox, highly personal brand of leadership.
Kaine, 58, a former Virginia governor, Richmond mayor and Democratic National Committee chairman, was chosen after a search that included riskier and more unconventional candidates who offered greater appeal to the party's liberal base.
He was a longtime favorite to become Clinton's running mate, however, in part because of the political and personal attributes she considers well-suited to the governing partnership she seeks - and in part because of the calculation that the experience of a Clinton-Kaine ticket would outgun Trump's outsider bombast.
Clinton notified supporters of her selection in a text message.
"I'm thrilled to tell you this first," the text read. "I've chosen Sen. Tim Kaine as my running mate. Welcome him to my team."
Kaine, who was in Rhode Island for a long-scheduled fundraising party, responded to the selection with a Twitter message.
"Just got off the phone with Hillary. I'm honored to be her running mate. Can't wait to hit the trail tomorrow in Miami!"
Kaine is not known for his charisma on the campaign trail; he has called himself the "happy senator" and even "boring" - and Clinton laughingly agreed in a PBS interview earlier this week.
"I love that about him," she said Monday.
"He's never lost an election. He was a world-class mayor, governor and senator, and is one of the most highly respected senators I know," she said.