The MAGA Corpus
This corpus is the outcome of the Google Summer of Code 2018 project devoted to sentiment analysis annotation (with an emphasis on figurative language) and the interpretation of political discourse in anglophone countries. The corpus is currently comprised of over 7000 politically-related tweets and contains several categories (for instance, metadata, polarity, mood, speech act, etc.).
Annotation guidelines and the corpus are available as attachments to this page.