Nepal votes on Thursday for a new parliament in a high-stakes showdown between an entrenched old guard and a powerful youth movement, six months after deadly anti-corruption protests toppled the government. Key figures contesting for power include the Marxist former prime minister seeking a return to office, a rapper-turned-mayor bidding for the youth vote, and the newly elected leader of the powerful Nepali Congress party. “Nepalis have been waiting for change for so long, from one system to an...