https://theconversation.com/quien-teme-a-unas-elecciones-municipales-208378
https://www.crisisgroup.org/es/latin-america-caribbean/andes/venezuela/winds-change-venezuela-chavismo-faces-greatest-electoral-test
https://visegradinsight.eu/whips-and-chains/?utm_source=VI+WWW&utm_campaign=03b4a33b7d-EMAIL_CAMPAIGN_4_19_2018_COPY_01&utm_medium=email&utm_term=0_3598053f62-03b4a33b7d-150926415
http://www.standard.co.uk/news/politics/boris-johnson-backed-by-ukip-in-general-election-a3530371.html