Notes:

Full explanation here: http://www.marshmallowsupernova.com/2015/07/steven-universe-episode-poll-analysis.html
Full results here: http://www.marshmallowsupernova.com/2015/07/steven-universe-episode-poll-results.html

409 people voted.

Some notes:
- Jailbreak is the highest-rated episode of the series, with an average rating of 4.92.
- Onion Trade is the lowest-rated episode of the series, with an average of 2.70. As can be seen by the fact that this isn't a very low rating, reception of the series as a whole is good to great, with only six episodes going lower than 3.00.
- Aside from the pilot, Joking Victim is the most forgettable episode, with 11% either claiming to have never seen it or being unable to recall it.
- Ronaldo does pretty badly, with both his starring episodes being #2 and #3 for the lowest. The organizer suggests this is because of the blowback from Rising Tides/Crashing Skies not being a Malachite episode, as many had predicted.
- Consensus as to the best episodes in the series was very strong – high-rated episodes also had low standard deviations, and Jailbreak had the lowest of them all. However, consensus on the worst episodes was a lot weaker, with many mid-low episodes having high standard deviations.
- Say Uncle is the most controversial episode in the series, with a standard deviation of 1.46.

So overall, about what you'd expect.