I&#x27;m not sure your link supports your claim.  The article focuses on wealthy congress people. It does mention Democratic leaning districts having a higher average income:<p>&quot;Across the country, Democratic House districts have an average per capita income of $27,893. That&#x27;s about $1,000 higher than the average income in Republican districts. The difference is relatively small because Democrats also represent a lot of poor districts, putting the average in the middle.&quot;<p>That income level is not considered &quot;rich&quot;.  As for presidential races: &quot;In the election, Romney carried only one income group: people making $100,000 or more, according to exit polls.&quot;<p>You may also want to look at the money Republicans have raised for the presidential race including super PACs.  Republicans have a much larger war chest due to large contributions from many very rich people.