I don't understand betting but, might I be on to something....

Why do gamblers think Donald Trump has such a good chance of winning?

(CNN)In the wake of the two national party conventions, a slew of national polling has been conducted that suggests the 2020 race hasn't changed all that much. Former Vice President Joe Biden maintains a high-single digit lead over President Donald Trump, with voters still very concerned about the coronavirus pandemic -- and less than thrilled about how Trump has performed on that front. (I wrote about all of that here.)

Yet, one thing has changed A LOT over the past month: How betting markets see the race. According to Real Clear Politics' aggregation of the odds being set by various markets, Biden went from a 61% chance of winning August 4 to a 50.5% chance on September 4. Which, if you look at the other available data in the race, doesn't make a ton of sense!