Open secrets has published a number of interesting reports based on recently filed campaign finance data:

• Bush (raised $339M) vs. Kerry (raised $312M) Quality of Disclosure data (interestingly, Bush is more transparent)
• US Senate: Feingold (raised $9M!) vs. Michels (raised $2.3M)
• Tammy Baldwin (raised $1.3M) vs Dave Magnum (raised $244K)