President Joe Biden leads former President Donald Trump in a contest between the two candidates‚ according to eight recent polls. The surveys give Biden a slight lead on a national basis ranging from one to three points‚ though it isn't clear if it would give him an overall victory due to the Electoral College. On March 12‚ Biden and Trump each won a series of primary elections to become their party's presumptive presidential nominees. This focused attention on how a likely presidential...