Vice President Kamala Harris has established a 4‑point lead over former President Trump among registered voters, according to a Thursday poll from Marquette Law School.The poll, conducted from July 24 to Aug. 1, surveyed 879 registered voters from across the country. It advertised a margin of error of 4.1%. The poll found that Harris expanded her lead among likely voters, with Trump trailing 6 points in a 53% to 47% matchup.Marquette says its likely voters result has a margin of error of 4.7% and was based on a survey of 683 people.The poll comes as momentum for Harris continues to surge following President Biden’s unprecedented decision to withdraw from the race last month.HARRIS IS ‘BIDEN’S CO-PILOT’ ON ‘BIDE …