Is this the true democratic principle?

This idea just popped into my head when I was talking politics with a buddy of mine, and it makes complete sense to me. I will explain why, fundamentally democrats cannot want this country to prosper or its people prosper. Democrats always push they are here for the little people, the less fortunate. They want everyone to have a chance at the american dream, have a small business, make good money, have a great job, and benefits. Here is the problem with that. If the majority of the less fortunate got that message, and achieved the american dream, made good money, had that big house and nice car....they would realize they can't vote for a democrat anymore. Democrats always need the poor to stay poor and the middle cl to always feel they are getting the shaft because if those 2 groups ever made more money or had a better life THEY WOULDN'T VOTE FOR DEMOCRATS! So please, you lefties out there explain how you can be for all of this "prosperity for the less fortunate" when you really mean "please just keep voting for us so we can keep you down and just tax the rich and let them pay for what you need." Look at all the big city governments...Chicago, Atlanta, Detroit, LA,...they are very high in poverty and all have had democratic leadership for a long time, and things are still the same. Coincidence? I don't think so. You poor and middle cl, you are being played. They don't want you to be successful, the democrats just want your vote.