LOS ANGELES — Nithya Raman had 115 days to make her case to Los Angeles voters. The sitting councilmember made a surprise last-minute entry into the mayor’s race, the last of the major candidates to file for last week’s primary. That left little time for her to form a campaign team, build her name recognition and persuade voters that she would be the best choice to lead the city. On Monday, the Associated Press called the race, concluding that Raman would have enough votes to make a Nov.