Hey Bernie, I know why the poor don't vote for you:

[Bluenorthwest]

7. Incomes under 20K-48% vote. Incomes over 75K- 77% vote

Why poor people still aren't voting

Less than half of those who made under $20,000 voted in 2012. Meanwhile, voter participation for people who live in households with incomes of more than $75,000 was much higher at 77%.

It's clear that the system is leaving many people out -- especially the poor.
http://money.cnn.com/2015/08/05/news/economy/poor-people-voting-rights/


Voter Turnout By Income, 2008 US Presidential Election
political participation rates by low-income Americans are alarmingly low, and our antiquated voting system contributes to this problem. The system is overly bureaucratic with unnecessarily restrictive registration procedures, which work to dissuade people from voting. Something as simple and common as moving within the same state jeopardizes voter eligibility due to registration requirements. Studies show that people of color, young people, and lower-income people move more often, leaving them more vulnerable to not being properly registered to vote.
http://www.demos.org/data-byte/voter-turnout-income-2008-us-presidential-election