The Democrat and Chronicle has a fundraising story covering all four Rochester-area districts. Based on fundraising ability, it looks like two will be competitive: the 29th and the 26th, the seat held by retiring Tom Reynolds.
Since a spokesman for Dale Sweetland, the Republican hoping to replace retiring Jim Walsh in the 25th, said "It's impossible for us to raise $900,000 before the election — let's be real", I'll be real, too. Dan Maffei, who raised half that amount last quarter alone, is on track for a big win in that district.
The 28th district, held by Louise Slaughter, is uncompetitive this year. Her challenger didn't even raise the $50K required for a campaign finance report.