CNN

MANCHESTER, New Hampshire (CNN) - Senator Hillary Clinton tops an average of the national polls in the battle for the Democratic Presidential Nomination. Here’s a month-by-month average of the support for each of the Democratic candidates the past four months. The May numbers includes today’s ABC – Washington Post poll, which was conducted mostly in May.

Below is the poll of polls without Al Gore included in the list of candidates.

NATIONAL POLL OF POLLS

                    Feb.  March  April  May
Clinton             42%    40%    38%   41%

Obama               24%    25%    26%   26%

Edwards             14%    15%    18%   14%

Richardson          5%     3%     3%    3%

Biden               2%     2%     2%    2%

Dodd                *      1%     1%    1%

Kucinich            *      1%     1%    1%

Clark               1%     2%     2%    1%

Sharpton            *      1%     1%    1%

Gravel              *      *      *     *

Below is the poll of polls with Al Gore included in the list of candidates

NATIONAL POLL OF POLLS

                    Feb.  March  April  May

Clinton              37%    36%    35%   36%

Obama                22%    23%    22%   23%

Gore                 13%    15%    14%   14%

Edwards              12%    13%    15%   12%

Richardson            3%     3%     3%    3%

Biden                 1%     2%     2%    2%

Dodd                  *      *      1%    1%

Kucinich              1%     1%     1%    1%

Clark                 1%     2%     1%    1%

Sharpton              1%     *      1%    1%

Gravel                1%     *      *     *

- CNN Polling Director Keating Holland