Nigeria, April 8 -- American senator, Bernie Sanders, has ended his primary contest for the Democratic Party presidential ticket.

Mr Sanders made the announcement to his campaign team via a video conference on Wednesday morning. His departure has now left former Vice-President Joe Biden as the presumptive nominee for the opposition ticket.

Mr Biden, 77, would challenge President Donald Trump of the Republican Party at the poll slated for November.

Mr Sanders announced suspension of his campaign a day after he protested against an in-person ballot that was held in the Wisconsin presidential primary. The senator said the election should have been postponed due to the coronavirus.

Mr Sanders, 78, from Vermont, was once deemed a frontrunn...