The current RCP Average for the head-to-head race shows Trump up by 2.7 points and by 3.8 points in the five-way race. Given the limited number of post-debate polls, the RCP Averages still include pre-debate polls. Averaging the polls conducted exclusively since the debate, Trump is ahead by 2.5 points in the head-to-head race and by 5.6 points in the five-way race. One week before the debate, on June 20, Trump’s lead was 0.9 points in the head-to-head RCP Average and 1.6 points in the five-way race, indicating a significant shift in the national polling landscape.
https://www.realclearpolling.com/stories/analysis/trump-takes-commanding-lead-in-post-debate-polls