Turkish President Tayyip Erdogan held his last election rallies in Istanbul, accusing the opposition of working with US President Joe Biden to topple him while making a final appeal ahead of the biggest challenge to his 20-year rule. #Erdogan #KemalKilicdaroglu #turkeyelections #News #Reuters #newsfeed #biden #Turkey #usa Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: https://www.reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en