Paying one's fair share is not just a problem for Tim Geithner

Apparently, it's a problem for self-reporting liberals, when compared with their conservative counterparts:

In May of last year, the Gallup polling organization asked 1,200 American adults about their giving patterns. People who called themselves "conservative" or "very conservative" made up 42% of the population surveyed, but gave 56% of the total charitable donations. In contrast, "liberal" or "very liberal" respondents were 29% of those polled but gave just 7% of donations.

These disparities were not due to differences in income. People who said they were "very conservative" gave 4.5% of their income to charity, on average; "conservatives" gave 3.6%; "moderates" gave 3%; "liberals" gave 1.5%; and "very liberal" folks gave 1.2%.

A common explanation for this pattern is that conservatives are more religious than liberals, and are simply giving to their churches. My own research in the past showed that religion was a major reason conservatives donated so much, and that secular conservatives gave even less than secular liberals.

It appears this is no longer the case, however: The 2008 data tell us that secular conservatives are now outperforming their secular liberal counterparts. Compare two people who attend religious services less than once per year (or never) and who are also identical in terms of income, education, sex, age and family status -- but one is on the political right while the other is on the left. The secular liberal will give, on average, $1,100 less to charity per year than the secular conservative. The conservative charity edge cannot be explained away by gifts to churches.

Perhaps you suspect that the vast political contributions given to the Obama campaign -- $742 million, according to the Center for Responsive Politics, versus $367 million for the McCain campaign -- were crowding out charitable giving by the left. But political donations, impressive as they were this year by historical standards, were still miniscule compared to the approximately $300 billion Americans gave charitably in 2008. Adding political and charitable gifts together would not change the overall giving patterns.

But here's where the charity gap really starts to make a difference for the recession of 2009: Conservatives don't just give more; they also decrease their giving less than liberals do in response to lousy economic conditions.