I really don't see much difference between what Snowden did and Democrats did while Bush was president.
It was clear that there was nothing that could be kept a secret while Bush was president. Pictures surfaced from a prison in Iraq showing guards mistreating prisoners. The NSA has long been known to be spying on Americans and thanks to the Democrats in Washington, who were in on secret meetings held by the White House, the press found out about just about everything. The press and Democrats would back up any soldier that refused to serve in Iraq. John Kerry used the Vietnam War as a stepping stone into politics. Sen. Barack Obama protested just about everything he's doing today.
Seriously, what has Snowden done that Democrats haven't already for over 10 years?