LAS VEGAS (AP) " The Latest on the Democratic campaign for president (all times local):

11 a.m.

Kamala (KAH'-mah-lah) Harris says that if she becomes president, she'd be happy to call the chief executive officer of McDonald's to urge better treatment of workers.

The Democratic senator from California was asked what she'd do to help workers pushing for better treatment from the fast food giant by an employee who is part of a union campaign to raise wages there to $15 an hour. Harris and several other Democratic presidential hopefuls are speaking at a union-sponsored forum in Las Vegas Saturday.

Harris says that she'd tell the executive that McDonald's can't be an icon of what's right with the United States if it doesn't treat its workers well.

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7:50 a.m.

Six Democratic presidential candidates are vying to promote their solidarity with workers. And they're focusing on wages and other issues of importance to labor in hopes of winning support from one of the country's major unions.

A forum in Las Vegas organized by the liberal Center for American Progress Action Fund and the Service Employees International Union comes as union leaders and their backers worry the field of at least 20 Democratic contenders isn't spending enough time on bread-and-butter concerns.

Labor is a pillar of the Democratic Party, but many white working-class voters and union members in swing states voted for Republican Donald Trump in 2016.

Democrats are trying to win back those voters. Party leaders and union members are telling candidates they need to talk about issues that matter to working families.