The New York State Board of Elections on Monday struck Senator Bernie Sanders (I., Vt.) from the Democratic primary ballot, leaving only Joe Biden on the ballot and effectively canceling the state’s primary.

Board of Elections co-chairman Doug Kellner said that while removing the senator from the ballot was difficult, the primary would be “frivolous” if held in the shadow of the coronavirus pandemic, Spectrum News reported. Board of Elections commissioner Andrew Spano concurred, saying primary activities will be minimized in order to safeguard the health of voters and poll workers. New York recorded 288,000 coronavirus cases as of Monday, with 158,000 of those cases in New York City and thousands more in the greater metropolitan area.

New York mayor Bill de Blasio, who had endorsed Sanders