We interrupt the regularly scheduled "UUdom is a microcosm of society part 2" post for a more timely story- the selection of Rev. Rick Warren for the Presidential inauguration invocation. LGBT community, welcome to politics 101: you got played.
The 1998 movie, Bulworth is about a politician whose political troubles and broken marriage causes a nervous breakdown. This breakdown causes him to start telling the truth. While speaking before an African American church, he is confronted with his failure to follow through on his promises to them, and is accused of lying. "Of course I lied!", he tells them, "What are you going to do- vote Republican?"
Democratic politicians have the freedom to betray their black constituents if they're in a tight situation, because they know that nothing they can do will make African Americans vote Republican. The same goes for any other locked-in constituency; once they can be relied on, they can be betrayed. And, of course, the same is true of Republicans. Fiscal conservatives have been calling Bush everything but a child of God for more than seven years; the response is the same- "What are you going to do, vote Democrat?"
President elect Obama is a cautious man, with an eye to the future. He knows that once he begins real work, the honeymoon will be over. Starting as soon as the next Congressional elections, he's going to need every vote he can get- which means he needs the religious vote, or at least as much of it as he can get. If that upsets the Gay and socially liberal vote, that's unfortunate, but... what are you going to do, vote Republican? Of course you won't. He knows that, and you know that, and all the faxes the Washington Office can send won't change the political reality. You can't even blame Obama for doing it- it's the political reality he has to work with.
Paradoxically, the more important a single issue is to you, the less likely it is that voting that way will change it. As long as the voting public is dominated by single issue or narrow range voters, this will be true. As long as politicians of all stripes know that the voting public will decide based on ninety second news stories and analysis by late night comedians, this will be true. Only when we forsake litmus tests and false party loyalties will change really happen.