BUDAPEST — When will the sex tape drop?  Talk to voters here about an election shaping up to be the most consequential for Hungary in decades, and it isn’t long before the conversation turns to the alleged secretly recorded intimate footage of Prime Minister Viktor Orbán’s challenger, Péter Magyar. In mid-February, journalists began receiving messages containing a still photo of a bedroom with the caption “coming soon.” The image has circulated widely on social media, but no video has surfaced.