Ex-M.T.A. Chief and Mayoral Candidate Is Unknown to Many Voters, Poll Says

By DAVID W. CHEN

Joseph J. Lhota, the former chairman of the Metropolitan Transportation Authority, remains an unknown quantity to the vast majority of New Yorkers, according to the poll. Sixty-nine percent said that they did not know enough about him to say whether they liked him or not, and of those who did, 19 percent assessed him favorably, and 11 did not.