Don't know much about this firm, though those are amazingly bad numbers for a Democrat in Rhode Island. Any reason that Cicilline would be so unpopular?
Fleming & Associates is a Rhode Island-based polling firm that has a lot of experience polling Rhode Island elections for WPRI-TV, Providence's CBS affiliate. Their polling usually is okay, though they often split a statewide sample and release RI-01 and RI-02 subsamples for congressional polls. This poll appears to be a 300-RV poll of RI-01 RVs only, with a MoE of +/-5.7% - a little higher than for your typical 400 RV poll.