An editor will likely have a pore over anything you do and advise or adjust if necessary. Do it! I'd be nervous too, even on a topic I knew insideout/upsidedown.

But...y'gotta do this up V. This stuff is a part of your voice...of you. Interest incites involvement...well it should. This is one of your domains V. Up the ante...that's the point of any pursuit. You'll regret missing this op. May I ask how your interest in politics might have progressed if you hadn't been offered this gig? You'll wind up doing something like this at some point...can't see you dropping this interest or being satisfied with mere observance. What exactly IS the gig? Ooo...yer fortunate...give 'er a shot!