As each primary has come and gone this year — Iowa, New Hampshire, Super Tuesday — YouTube has encouraged users to cover them using video. But politics editor Steve Grove, who heads up the YouChoose ‘08 section of the site, never thought we’d be going this late into the year. Yet here we are.

So the YouChoosers are upping the ante a bit. For Pennsylvania, they’re still asking voters to upload videos focusing on the primary, but they’re also partnering with the illustrious C-SPAN to promote the videos.

They’re asking YouTubers to upload video responses to the question, “What is the most important issue to you in this election?” C-SPAN will apparently air the most popular questions in the week before the PA primary.

Back when we started covering this stuff, Grove and Co. were on the forefront of voter involvement (remember the Spotlight series?). Good to see they’re still at it.