Venezuela’s government escalated attacks Tuesday on the past weekend’s opposition primary to choose a challenger for President Nicolás Maduro next year, saying the voter turnout claimed by organizers was inflated and amounted to a crime. Maduro’s government and its allies have spent months hindering opposition efforts to hold their primary election and have banned the now-apparent winner from being a candidate — leaving the effectiveness of Sunday’s poll in doubt. The attacks on the legitimacy of the primary also could sow fear among voters already wary of government reprisals for participating in the polling.