Second Congressional District voters are left with the unfortunate task of having to decide between incumbent Bill Jefferson and challenger Karen Carter in today's runoff election. Politically, both are liberal, though Carter is even farther to the left than Jefferson. Looming in the background is the anticipated criminal indictment of Jefferson, which ought to sway the election in favor of Carter, who has less known baggage of that sort. Look for record low turnout caused by lack of widespread enthusiasm for either candidate. Unfortunately, one of them has to win.