The shot heard around the polling world tonight is Joni Ernst's 7-point lead over Bruce Braley in the final Des Moines Register poll.
Though DMR pollster Ann Selzer has a record of accuracy in Iowa surveys, this poll is at odds with some other recent ones that have the race within 2 points either way.
Public Policy Polling (PPP) is on a weekend marathon of polls to close out this election cycle and its results are likewise disappointing for the Democrats.
Arkansas (Cotton 49-41) and Kentucky (McConnell 50-42) seem gone for the Democrats.
One glimmer of hope for the Democrats from PPP is that Landrieu leads Cassidy 43-35 in the November open primary, and she trails only 48-47 in a hypothetical run-off.