In November, 36.0% of American Adults identified themselves as Republicans; 34.7% considered themselves Democrats, and 29.3% were not affiliated with either major party. That’s the largest number of Republicans since February 2005 and the first time ever that Rasmussen Reports polling has found more people identifying as Republicans than Democrats…

It is worth noting, however, that the gains are often short-lived. Following Election 2004, the Republican partisan decline began in February 2005. In 2006, the Democratic edge began to decline as soon as they actually took control of Congress in January. Following President Obama’s victory in November 2008, the Democrat’s advantage in partisan identification peaked in December before declining.