Although the "gender gap" has varied over many years, women of all ages are more likely than men to identify as Democrats.

Among ethnic minorities, women also are more likely than males to identify as Democrats.

In 2000, 74 percent of African-Americans identified themselves as Democrats.

But it also has strong backing from people who identify themselves as Democrats in the opinion polls.

Those identifying themselves as Democrats dropped from 60% to less than 40%.

For decades, a greater percentage of white voters identified themselves as Democrats, rather than Republicans.

Hamm and his partner both identify themselves as Democrats.

Among men, 29 percent also said they were Republicans but just 26 percent identified themselves as Democrats.

Inside the bubble, first names come second after some people identify themselves as Democrats or Republicans.

Women are also much more likely to identify themselves as Democrats: 40 percent did so, compared with 30 percent of the men.