I interviewed in an off-season (for spring). I applied and reached out again a few weeks later to express my interest again - this is what got a response. I then talked with one of the intern managers who was very nice and asked reasonable questions.
Interview questions [1]
Question 1
What are you passionate in the area of animal welfare?
Legislative Intern applicants have rated the interview process at Humane Society Legislative Fund with 2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 100% positive. This is according to Glassdoor user ratings.