The public’s frustrations with the U.S. tax system have not changed much in recent years. Majorities of Americans say they are bothered a lot by the feeling that some corporations and wealthy people don’t pay their fair share in taxes, according to a Pew Research Center survey conducted April 5-11.

Nearly half say they are bothered a lot by the complexity of the federal tax system, while a third say the same about the amount they pay in taxes. Just 13% express a similar degree of frustration with the feeling that some poor people don’t pay their fair share in taxes.

Democrats and Democratic-leaning independents are far more likely than Republicans and GOP leaners to say they are bothered “a lot” by the feeling that some corporations don’t pay their fair share in taxes (76% vs. 38%). There is a similar gap over the feeling that some wealthy people don’t pay their fair share (78% of Democrats vs. 36% of Republicans).