I think it’s the best out there because it’s a daily, rolling poll of a LOT of people.
Remember also that increasing the size of the sample only decreases the MOE as the square root of the number sampled. Sampling 5000 adults only reduces the MOE from ±3 to ±1.34, but increases the cost by a factor of 5.
And, remember the biggest error is not in the MOE, which is well known, but in determining how to decide which of your respondents are going to actually vote.