Democratic presidential nominee Joe Biden leads President Trump by nearly 6 points among active-duty troops, according to a new Military Times poll released on Monday, suggesting that the president’s support may be eroding among a group he sees as a part of his political base. The poll, conducted in partnership with the Institute for Veterans and Military Families at Syracuse University with participants chosen from Military Times subscribers, showed Biden garnering 43 percent support among active-duty service members to Trump’s 37 percent. By comparison, a similar poll from October 2016 showed Trump leading then-Democratic nominee Hillary Clinton by roughly 20...