Some states want their voters to take ID cards to the polls. In New York City, you may want to bring a magnifying glass. Voters who trekked to the polls for Thursday’s primary races were handed ballots with candidates’ names printed in an eye-straining 7-point type, akin to the ingredient list on the side of a cereal box. Now the city Board of Elections is facing outsize criticism over the mite-size font. Civic groups and lawmakers are calling for reform. And some voters are wondering why the instructions on the ballot were displayed in larger and clearer typefaces than the names of the candidates and the offices they were running for. “I just stood and squinted,” recalled Elinore Kaplan, a semiretired teacher in Manhattan, who said she was upset and disappointed to have so much trouble ensuring she voted for the person she wanted to vote for. “It shouldn’t be a challenge,” she said of the ballot’s design. “It should be an invitation.”