Gallup is out with new poll results today based on responses to the question, "Do you, personally, identify as lesbian, gay, bisexual, or transgender?" The question was asked in tracking interviews during the second half of 2012 and is the largest single study of the LGBT population distribution on record.
As was outlined in the first report of these data in October, measuring sexual orientation and gender identity can be challenging because these concepts involve complex social and cultural patterns. There are a number of ways to measure lesbian, gay, and bisexual orientation, and transgender status. Gallup chose a broad measure of personal identification as LGBT because this grouping of four statuses is commonly used in current American discourse, and as a result has important cultural and political significance. One limitation of this approach is that it is not possible to separately consider differences among lesbians, gay men, bisexuals, or transgender individuals. A second limitation is that this approach measures broad self-identity, and does not measure sexual or other behavior, either past or present.
Here are the results: