Great analysis by Nate Silver of Five Thirty Eight. He supports what I've been saying: Republican "fundamentalism" about refusing to consider any additional federal revenues for any reason is way beyond how the majority of Americans feel.
The average Republican voter, based on this data, wants a mix of 26 percent tax increases to 74 percent spending cuts. The average independent voter prefers a 34-to-66 mix, while the average Democratic voter wants a 46-to-54 mix.
...But the House Republicans are very unlikely to capitulate on their no-tax pledge. And Democrats have little reason to capitulate either: they are on the right side of public opinion.