In April, for the second straight month, the number of Republicans in the nation fell by roughly half a percentage point. The number of Democrats remained unchanged from a month ago.
Currently, 38.7% of Americans say they are Democrats while 32.6% consider themselves Republicans.

Since last August, the number of Republicans in the nation has stayed in a very narrow range from 32.6% to 33.8%. During that same period, the number of Democrats has ranged from 38.7% to 41.6%. (see history from January 2004 to present)

It’s worth noting that both parties are now at the low end of their recent range and the number not affiliated with either party is at the highest level since July. That’s a natural consequence of the election season driving people to make a choice in the fall and having them drift back following Election Day.

For most of 2006 and 2007, the number of unaffiliateds was at or above the 30% mark. However, during Election 2008, the number of unaffiliateds declined, primarily shifting to the Democratic column.
The Democrats now enjoy a 6.1 percentage point advantage over Republicans. During the first three months of 2009, the Democrats averaged a seven-point advantage.

While the partisan identification numbers shift little from month-to-month, the numbers document just how dramatically the political environment has changed over the past four years. In January 2005, as President Bush was inaugurated for his second term in office, the Democrats enjoyed just a one-percentage-point advantage over the GOP.

Rasmussen Reports tracks this information based upon telephone interviews with approximately 15,000 adults per month and has been doing so since November 2002. The margin of sampling error for the full sample is less than one percentage point, with a 95% level of confidence.
Keep in mind that figures reported in this article are for all adults, not Likely Voters. Republicans are a bit more likely to participate in elections than Democrats.

The Rasmussen Reports daily Presidential Approval Index shows that Barack Obama continues to earn favorable reviews early in his administration.

Democrats continue to have a significant advantage on 10 key issues tracked by Rasmussen Reports while the Generic Congressional Ballot is competitive.