In the first—and possibly only—presidential debate between US Vice President Kamala Harris and former President Donald Trump, the Democratic candidate showed that she had the energy President Joe Biden lacked, though it’s unclear if it will be enough to win in the polls. With the two major parties’ candidates in a virtual tie heading into Tuesday’s debate, attendees at a watch party at the Commonwealth Club in downtown San Francisco seemed to be feeling a sense of dread as they took their seats in front of the big screen. That quickly changed as Harris got past what appeared to be initial nerv…