In the 21st century, libertarian groups have been successful in advocating tax cuts and regulatory reform. While some argue that the American public as a whole shifted away from libertarianism following the fall of the Soviet Union, citing the success of multinational organizations such as NAFTA and the increasingly interdependent global financial system, others argue that libertarian ideas have moved so far into the mainstream that many Americans who do not identify as libertarian now hold libertarian views. Circa 2006 polls find that the views and voting habits of between 10 and 20 percent (increasing) of voting age Americans may be classified as "fiscally conservative and socially liberal, or libertarian". This is based on pollsters and researchers defining libertarian views as fiscally conservative and socially liberal (based on the common United States meanings of the terms) and against government intervention in economic affairs and for expansion of personal freedoms. Through 20 polls on this topic spanning 13 years, Gallup found that voters who are libertarian on the political spectrum ranged from 17 to 23% of the electorate. While libertarians make up a larger portion of the electorate than the much-discussed "soccer moms" and "NASCAR dads", this is not widely recognized as most of these vote for Democratic and Republican party candidates, leading some libertarians to believe that dividing people's political leanings into "conservative", "liberal" and "confused" is not valid.