Nigel Farage has accused Labour of "direct interference" in the US election after it was revealed that nearly 100 current and former party staff will campaign for Kamala Harris.

Labour activists will spend twoandahalf weeks canvassing in key battlegrounds before the November 5 election. Farage called it "direct election interference" and questioned who is funding the effort, especially if Trump wins.

Labour staff must cover their own travel costs, while Democrat volunteers will provide accommodation. Those participating are expected to take annual leave for the trip.