US President Donald Trump warned on Monday (May 25) that he may move the Republican National Convention from North Carolina set for August if the event faces state social distancing restrictions as a result of the coronavirus.
The coronavirus pandemic has forced Mr Trump and presumptive Democratic nominee Joe Biden to halt campaign rallies.
Some have raised concerns that the large formal nominating conventions that are typically packed with delegates could raise safety issues.
Mr Trump said on Twitter that if Democratic Governor Roy Cooper doesn't immediately answer "whether or not the space will be allowed to be fully occupied", then the party will find "with all of the jobs and economic development it brings, another Republican National Convention site".
The conventions include prime-time TV speeches that serve to kick off the final sprint toward the November presidential election. The Republican event is set to start on Aug 24 in Charlotte.
Mr Cooper's office did not immediately react to a request for comment.
The Democratic National Convention, which was postponed by a month because of the coronavirus, is set to begin on Aug 17 in Milwaukee, Wisconsin.
A spokeswoman for the DNC event said earlier this month "we continue to remain in constant communication with federal, state, and local public health officials and will follow their guidance to determine how several people can safely gather in Milwaukee this August".