Democratic presidential candidate Hillary Clinton, has chosen Sen. Tim Kaine, D-Va., to be her running mate. She announced the choice via Twitter on Friday.

TAMPA, Fla. — Hillary Clinton and Tim Kaine will debut as a presidential ticket in the crucial battleground state of Florida as they head toward next week’s Democratic Party convention.

They are set to appear Saturday at Miami’s Florida International University.

Clinton ended a months-long search for a running mate with a Friday evening phone call to the Virginia senator. Long viewed as a likely choice, Kaine is a fluent Spanish speaker with a reputation for working with Republicans.

Kaine’s selection completes the line-up for the general election in November. Clinton and Kaine will face Republican Donald Trump and his running mate, Mike Pence, the Indiana governor.

Kaine, 58, was the choice over Agriculture Secretary Tom Vilsack, a longtime friend of the candidate and former President Bill Clinton. Kaine’s strong ties to politically important Virginia, as well as his foreign policy experience, put him over the top, according to a person close to the campaign, who insisted on anonymity because the person was not authorized to discuss the process publicly.

He also had a particularly powerful backer: President Barack Obama, who advised Clinton’s campaign during the selection process that Kaine would be a strong choice.

Kaine is viewed skeptically by some liberals in the Democratic Party, who dislike his support of free trade and Wall Street. Shortly after Friday’s announcement, Stephanie Taylor of the Progressive Change Campaign Committee said Kaine’s support for the Trans-Pacific Partnership trade pact gives Republicans “a new opening to attack Democrats on this economic populist issue.”

Notably, a campaign aide said Kaine made clear “in the course of discussions” that he shares Clinton’s opposition to TPP in its current form.

Clinton’s campaign teased the announcement throughout Friday, encouraging supporters to sign up for a text message alert to get the news — a favorite campaign method for getting contact information about voters.

The Democratic candidate made no mention of her impending pick during a somber meeting with community leaders and family members affected by the Pulse nightclub shooting in Orlando and a later campaign rally in Tampa.

When the news came via text, she quickly followed it with a message on Twitter: “I’m thrilled to announce my running mate, (at)TimKaine, a man who’s devoted his life to fighting for others.”