During a trip to the White House in June, former President Barack Obama made it clear to his former running mate that he was committed to doing whatever it takes to support his re-election, three sources familiar with the meeting confirmed to NBC News.

As part of a visit that included a private lunch, the two presidents discussed how much was at stake in 2024, especially because of the continued strength of former President Donald Trump’s base, two of the sources said.

The Washington Post was first to report Wednesday that Obama had expressed concern during the private lunch about Trump’s strengths, including his base, conservative media that’s friendly to Trump and a politically polarized electorate. Sources familiar with the meeting declined to offer additional details.

“Just as he always has, President Obama looks forward to supporting Democrats up and down the ballot next fall, and no race has bigger stakes than President Biden’s re-election,” Eric Schultz, an Obama spokesperson, told NBC News.

“Our strategy will be based on driving impact. We place a huge emphasis on finding creative ways to reach new audiences, especially tools that can be directly tied to voter mobilization or volunteer activations. We are deliberate in picking our moments because our objective is to move the needle,” Schultz added.