One of the few Dem-held seats the GOP has heavily targeted is the one held by Dem Rep. Jim Marshall in Georgia — after all, the GOP-led state government recently redrew his district to include the home town of Marshall's GOP challenger, Mac Collins. But Election Central has now obtained an internal poll from the Marshall campaign which suggests that he's pulled significantly ahead of Collins. The poll, which was conducted by the Mellman Group, a Dem firm, finds Marshall up 50%-34% — a large enough spread to suggest that Marshall is in comfortable shape even if you factor in the inevitable bias of publicly-released internal polls. Key footnote: The poll has Marshall and Collins tied among white voters, while Marshall wins by a landslide among blacks. We'll be posting the poll's internals shortly.