Democrats Dominated Midterm Election—Winning 68 Percent--Among 3 Percent of Voters Who Were Gay, Lesbian or Bisexual

By Terence P. Jeffrey | November 4, 2010 | 2:05 PM EDT

The skyline of San Francisco rises beyond the Golden Gate Bridge as seen from the Marin County headlands. (Wikimedia Commons photo)

( -- Democratic congressional candidates dominated the midterm election vote Tuesday—winning 68 percent--among the 3 percent of the electorate who said they were gay, lesbian or bisexual, according to the exit poll conducted for the major television networks by Edison Research.

By contrast, Republican House candidates won the heterosexual vote, defeating Democrats among this demographic 52 percent to 46 percent.

Heterosexuals accounted for 97 percent of midterm election voters, according to the exit poll, which surveyed 17,504 voters at randomly selected precincts nationwide.

According to the 2000 U.S. Census, there were 105.48 million households in the United States of which 59.97 million were headed by couples (both married and unmarried). Of those 105.48 million households, 594,391 were headed by same-sex couples, or about 0.56 percent of all households, and about 1 percent of all households headed by couples.

The Census Bureau reported that, according to the 2000 Census, unmarried same-sex-couple households were more likely than married couples to live in urban areas, and that unmarried same-sex couples were more likely than unmarried opposite-sex couples to live in central cities.

"Of the four different types of households maintained by couples, married-couple households had the lowest rate of metropolitan residence (79 percent), while same-sex unmarried-partner households had the highest rates: 84 percent of female same-sex households and 86 percent of male same-sex households,” said the Census Bureau.

“Among unmarried partner households, opposite-sex partners were less likely to reside in central cities (35 percent) than female same-sex partners (38 percent) or male same-sex partners (45 percent),” the Census Bureau reported.

Among cities with a population of 100,000 or greater, the city with the highest percentage of same-sex couple households was San Francisco, Calif., according to the Census Bureau. Even in San Francisco, however, there were only 8,902 same-sex-couple households out of a total of 329,700 households. That means same-sex-couple households accounted for only 2.7 percent of households in San Francisco, according to the 2000 Census.

Most of the City of San Francisco is represented in the U.S. House of Representatives by Speaker Nancy Pelosi, whose party lost its majority in the House in Tuesday's election.