(AP) – President Donald Trump says he’s temporarily halting his trademark rallies as his campaign bows to the coronavirus outbreak that is rapidly reshaping the political landscape.

The rallies have long been Trump’s most potent political weapon. They energize the candidate and give him a powerful platform from which to attack his adversaries while his team collects a treasure trove of voter data.

But the spread of the virus which has closed schools and shuttered professional sports leagues has also touched the 2020 presidential campaign.

Leading Democratic contenders Joe Biden and Bernie Sanders canceled their scheduled rallies earlier this week.