Democrat Joe Biden said Wednesday he was confident of winning the presidency once all votes are counted, saying he was leading Donald Trump in the remaining swing states that will determine the election’s outcome.With results from Tuesday’s election showing Biden steadily nearing the threshold necessary to win the White House, Trump has mounted legal challenges in efforts to suspend the counting of ballots or force recounts in battlegrounds that will determine the next president.”After a long night of counting, it’s clear that we’re winning enough states to reach 270 electoral votes needed to …