Bruce Drake writes at Pew:
The round of Republican primaries held Tuesday has been headlined as a tide-turning victory of the GOP establishment over Tea Party insurgents, with the most notable one being the win scored in Kentucky by Senate Minority Leader Mitch McConnell over a well-funded opponent. But whatever yesterday’s votes portend, polls have been showing a decline in Tea Party support among Republicans since their peak of influence in 2010.
In asking Republicans whether they agree or disagree with the Tea Party, Pew Research surveys found that agreement has fallen from 48% in March 2010 to 33% in our most recent poll conducted in late April this year. At one point agreement with the Tea Party dipped to 28% in May 2013, during the long budget standoff between congressional Republican leaders and the White House.