Back in 2004 yes but today it is left wing
Atlas Forum was actually pretty right-wing until after the 2006 midterms. I remember seeing posts from 2005 and early 2006 that were saying that George Allen would be the Republican nominee in 2008 and defeat Hillary Clinton by a Reagan 1984-style margin. What's kind of funny is that even the forum Democrats agreed so. In addition, it also seems like there were slightly more Republican members of the forum around 2004 and 2005.
I would say that the main factors behind the shift of Atlas Forum more to the left include the defeat of the Republican Party in the 2006 midterms and the 2008 Presidential election and the changing demographics of new forum members. Beginning in the late 2000s, many new posters born between the mid 1980s to mid 1990s joined the forum that had views that were much more to the left than those of the earlier posters who were born in the 1970s and earlier part of the 1980s. I would say that the group of forum members born between the 1970s and early 1980s were more conservative because they came of age during the Reagan era and thus view conservatism in a more positive light, whereas the group of forum members born from the mid 1980s onward is more liberal is because they came of age when George W. Bush was President and thus view conservatism more negatively.
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