Democratic billionaires- we need you to illustrate what this 30 million dollar military parade would be better spent on. That, and the fact that the person who requested it dodged the draft however many times because of “bone spurs.” Is that a hair-related malady? Fuck

— Chelsea Handler (@chelseahandler) March 16, 2018

Way back in the 1960's, the Democrats represented the working class and the Republicans were the party of the wealthy.
Not anymore. French political economist Thomas Piketty calls the Dems the "Brahmin Left".
But it's possible to attach actual numbers to this.

We cross-checked the Open Secrets list of the top 100 individuals donating to outside spending groups in the current election against the Forbes list of the world’s billionaires and found that, as of June 19, there were 22 individuals on the Open Secrets list who were billionaires. Of those 22 billionaires, 13 -- or more than half -- gave predominantly to liberal groups or groups affiliated with the Democratic Party. The other nine gave predominantly to conservative groups.

So 60%.
But it's skewed even more than that.
The top four richest Americans, and seven of the top nine, all give more money to Democrats than Republicans.

To put that into perspective, the top 3 billionaires have a net worth greater than almost the entire working class of America, and the world's eight richest men have a net worth equal to the bottom 50% of the entire world.

So if money is what matters in politics, what are the chances that the Dems will ever represent the working class ever again?
Who will the Dems listen to if there is a conflict of policy interests with their billionaire donors?
What are the chances of a two party system, both owned by billionaires, ever allowing a third party into the process?

Democratic voters are more wealthy too.

Interestingly the Democratic party as a whole skews towards the wealthy. The New York Times noted in October 2016 that in a recent poll 45% of households making over $100,000 were voting for Democrat Hillary Clinton opposed to 28% of Republicans voting for Trump. Those earning above $250,000 were even more skewed towards Hillary, with 53% planning to vote for her vs only 25% for Trump.

Let's not forget who's the Party Of Big Business.