Washington, Aug 25 (IANS): Outgoing UK Independence Party (UKIP) leader and Brexit backer Nigel Farage has urged Republicans to "get your walking boots on" and drum up support for presidential nominee Donald Trump.

Farage, joined Trump on stage at a rally in Jackson, Mississippi on Wednesday night to draw similarities between the UK's vote to leave the European Union (EU) and Trump's insurgent campaign and to re-declare American independence, CNN reported.

Trump introduced Farage as the man who "brilliantly" led the UKIP's campaign to secure a vote on the future of the UK's 40-year membership of the EU.

Although Farage, who attended the Republican convention in Cleveland last month, declined to endorse Trump, he freely opined on the US presidential election.

"I will say this: If I was an American citizen, I wouldn't vote for Hillary Clinton if you paid me. I wouldn't vote for Hillary Clinton if she paid me," CNN quoted Farage as saying.

Trump, who is trailing his Democratic rival Hillary Clinton in the opinion polls, backed the UK's exit from the EU that took place on June 24.

In a tweet last week, Trump said: "They will soon be calling me Mr Brexit", BBC reported.

Farage said he had a "message of hope and optimism" for the Republican Party.

He drew on parallels between Mr Trump's bid for the White House and that of the Brexit campaign's "people's army of ordinary citizens", which he said engaged successfully with the public prior to the UK's referendum vote on whether to leave the EU, the BBC reported.

"If you want change in this country, you better get your walking boots on, you better get out there campaigning," Farage said.

Farage's visit comes as Trump continues to struggle in the polls, and the conservative British politician also sought to encourage Trump supporters not to despair, pointing to polling in the UK that hinted at defeat for the referendum to leave the EU, CNN noted.

"And actually they were all wrong," Farage said, adding "Remember, anything is possible if enough decent people are prepared to stand up against the establishment."