Ooh, not so much. There are arguments about that postulate the conservatives give more to charity than liberals.
That's only true when you count religious giving.
Now then, yes, there are many, many valid religious charities (and by this I mean organizations, as well as that component of church giving that factors into benevolence).
But by studies performed by religious organizations themselves (who if anything are likely to skew the numbers more positively), across the board, "Local and national benevolence receives 1 percent of the typical church budget", and an additional 5% goes to "church run programs" (be it after school care, social or group activities).
If a secular charity - and lets go back to Charity Navigator here - Top Ten Inefficient Fundraisers (http://www.charitynavigator.org/index.cfm?bay=topten.detail&...) we see some of the worst charities spending 15% of their donations on "program expenses" (i.e. doing what they are being given money to do).
I'm not familiar with the monitoring of 501(c)3 groups, but I suspect if charities were to regularly spend only one per cent of their givings on what they got to enjoy tax exemption to do, they'd likely have such a status revoked.
And, if you factor in this average percentage (even the six per cent combined, which is generous, as as much fun as social and youth activities are, they're not necessarily serving a critical need), and start to question 'how much money is being spent on 'spreading the word', patting themselves on the back, competitions in Texas to see who can built the world's biggest cross just down the road from where the world's previously biggest cross was built at costs of millions, there comes more and more skepticism of just how highly you can value "giving to your church" on the scale of charitable contributions.