A man casts his ballot at a polling station in Madrid, Spain, April 28, 2019. Spain's polling stations opened on Sunday at 09:00 local time (0700 GTM) for the country's third general election in four years. Close to 37 million voters are called to cast their votes in over 23,000 polling stations located in thousands of municipalities across Spain. (Xinhua/Guo Qiuda)