Every dollar of SNAP benefits generates $1.84 in the economy in terms of economic activity. If people are able to buy a little more in the grocery store, someone has to stock it, package it, shelve it, process it, ship it. All of those are jobs. It's the most direct stimulus you can get in the economy during these tough times.
I don't know of a Democrat - whether they're a conservative, a centrist or a liberal Democrat - that doesn't think that it's important to have quality jobs that pay decent wages so that families can support themselves, so that they can have the dignity of being able to afford health care, put money aside for pension, buy a home.