Biden advised US state governors not to publicly support him to avoid the risk of "retaliation" by the Trump administration.

"I told some governors, don't openly show my support. Don't do it because you'll have to pay the price. You won't get what you need from the federal government in response to Covid.

Biden has previously received public support from Democratic state leaders such as Michigan Gov. Gretchen Whitmer, California Governor Gavin Newsom and New York Governor Andrew Cuomo.

US President Donald Trump has regularly praised his administration's response to Covid-19, while criticizing governors, especially those of the Democratic state, for poor handling of the pandemic.

Last month, the US President blamed "green states" (Democratic-led states) for spreading nCoV in the country.

According to the analysis by Axios, there is currently no link between the party of the state governor and the number of deaths from Covid-19 in the locality.

The US President is undergoing Covid-19 treatment at the Walter Reed National Military Medical Center.