This is a great, concrete project with a clear focus and ends. What I'm wondering as I read your proposal, is whether these videos will be produced to be mouthpieces for the candidates. That's the sense I get when you say, "I will try my best to tell the story easily, so it can help candidates to appeal to voters." Are you mostly interested in having candidates appeal to voters, or for voters to get a rounded look at all the candidates? This could be tricky, but it seems to me that well-done, fair and balanced videos would be good.
When you pitch your project, I'm assuming you'll be producing all of the 15-second twitter videos, correct? In your pitch you'll also need to explain how many you'll produce, and why the 15-second format is appropriate to give voters a well-rounded look at the candidates. Mostly, in the pitch you'll need to explain exactly what will be included in at least one 15-second video -- each of the elements-- so that people have a really clear sense.
Looking forward to hearing more.
Your review looks really good! I think that for the final paper that accompanies the project the you and Min are putting together (the short videos), both you and Min can pull your sources together into one paper since you're working on the project together. I hope it's going well!