Vice President Kamala Harris made a swing state appearance in an effort to rally her party around President Joe Biden as calls grow for her to take his place as the Democratic Party’s presidential nominee.

On paper, Harris’s visit to Las Vegas on Tuesday was an effort by the Biden campaign to ramp up outreach to Nevada’s large Asian American, Native Hawaiian, and Pacific Islander population. But as many Democrats panic about the president’s perceived mental decline, Harris took the opportunity to stave off fears that Biden’s bid for reelection is doomed for failure.