4. Laurene Powell Jobs

Laurene Powell Jobs, wife of the late Apple co-founder Steve Jobs has contributed $59,800 in 2011-2012 so far. She leans totally to the left donating 100 percent to Democrats.

According to Influence Explorer, Steve Jobs never contributed to political campaigns because he didn't like donating to anybody. His wife is more kind. Laurene Powell Jobs has donated completely to Democrats, including President Obama, Sen. Kirsten Gillibrand of New York and former Rep. Gabrielle Giffords of Arizona. In 2010, she began serving on Obama's White House Council for Community Solutions.

3. Sheryl Sandberg

Chief operating officer of Facebook, Sandberg contributed $60,800 in 2011-2012 so far. She has donated 96 percent to Democrats and 4 percent to Republicans.

While there's no record of Facebook CEO Mark Zuckerberg donating, his No. 2 was once a Washington heavyweight. During the Clinton government, Sheryl Sandberg worked as chief of staff to then-Treasury Secretary Larry Summers. She has donated to President Barack Obama and a range of Democratic lawmakers.