Per the IRS
Americans filed 140 million tax returns for calendar year 2008 income. Through the use of deductions, exemptions and credits, 52 million tax returns of the 140 million total returns (or 37% of all returns filed) paid zero federal income tax (source: Internal Revenue Service).
In fact, many of those 37% that filed and paid no tax did so for the purpose of getting refundable credits such as the Earned Income Credit. In other words, these are people that file a return, pay $0 tax and actually get a refund. Sweet! My understanding is that 47% of 2009 filers paid no tax in part due to energy and stimulus orienetd credits.
Care to guess who those 52 million plus Americans voted for? I say “plus” given the fact that many of the returns filed may be joint returns.