US Vice President Kamala Harris is leading presidential candidate Donald Trump in four of the seven key states that are likely to determine the outcome of the November elections, informs Bloomberg. According to a poll conducted by Bloomberg News and Morning Consult, Harris leads Trump in Arizona (49% for the Vice President versus 47% for the former President), Wisconsin (50% to 47%), Michigan (53% to 42%), and Nevada (47% to 45%). At the same time, both candidates have garnered the same level of support in Georgia (47%). In the remaining two swing states, Trump is ahead of Harris in Pennsylvan…