From the Brain Trust at TPM:

The Obama campaign confirms that it raised an astonishing $32 million — in the month of January alone.

Clearly, the Iowa win on January 3 provided a huge burst of fundraising momentum right on through the South Carolina victory.

To put this number in perspective: In one month, Obama raised more than half the $51 million Howard Dean raised during his entire campaign in 2004, and roughly one-fourth the full sum of $125 million George Bush raised to take the presidency in 2000.