GOP Presidential candidate and former Republican congressman Joe Walsh has claimed that he has lost his national radio show after he announced his bid to campaign for the presidency.

Speaking to CNN anchor John Berman on Monday, Walsh said that his conservative radio show which was distributed nationally by the Salem Radio Network had been canceled earlier that day. While he didn’t know the reason for cancelation, he said that most of his listeners supported President Donald Trump.

“This announcement does not affect Walsh’s local program airing on AM 560 The Answer in Chicago, however Walsh’s program will have to be removed as soon as he becomes a viable and legal candidate for President,” the announcement made by Salem Radio Network said. The network will cancel the national distribution of the show effective from Sept. 26.

"I don't know why. I just got a notice before I came into the studio. I'm running for president. I oppose this president. Most of my listeners support the president. It's not an easy thing to do to be in conservative talk radio and oppose this president," CNN reported Walsh as saying.

Walsh estimated that about 80 to 90 percent of his audience were Trump supporters. He also said that he knew the show would be jeopardized if he campaigned against Trump.

"I knew that, John, when I made this announcement yesterday, that it could be in jeopardy," the former congressman said. “No more radio show, but that's OK. I'm going to campaign full time. ... This was a difficult thing to do, yes, but I believe it's urgent because this president is a danger. We cannot let get elected for another four years," Walsh said.

US President Donald Trump said he was 'not happy' with North Korea's latest missile test
US President Donald Trump said he was 'not happy' with North Korea's latest missile test AFP / Nicholas Kamm