Franken survived a very close race in 2008 defeated Norm Coleman by a few hundred votes. He was able to overcome an IRS investigation that resulted in him having to pay back around $70,000
in back taxes because of a little over 50,000 thousand that he owed. The investigation found that Franken had only paid taxes in two states that he lived rather than the 15 others that he was required to pay taxes because he earned money in those states. Initially Franken told media sources that he only owed taxes in California but it was later revealed that he owed in 14 other states.
Franken blamed it on a mistake made by his accountant. The website of the accounting business the accountant worked for said they specialize in touring. Most accountants say no accountant should make that kind of error.
Franken may not prove to be a particularly strong candidate when all is said and MIke Mcfadden should have a shot at an upset here.