According to the Norwich Bulletin, internal polls show that Simmons is either up by around 15 or down by 1:
U.S. Rep. Rob Simmons' campaign released information regarding its internal polling that shows the three-term Republican incumbent leading Democratic challenger Joseph Courtney 50 percent to 36 percent. The Democratic Congressional Campaign Committee released its internal polling data that said Courtney was holding a 1 percentage point lead, essentially proclaiming the race a dead heat.
It's not surprising both "internal" polls -- conducted by the national political parties -- have their guy out front. (Hackett)
We have seen almost nothing in the way of reliable polling for the 2nd District--so who knows where the race actually stands? I have a lot of trouble believing Simmons could be up by 15%, though. Not in this district, and not this year.
Hackett, Ray. "Column: Dodd reflects on Nuremberg trials, his father's role." Norwich Bulletin 1 October, 2006.