Decision 2018 – JMC Analytics and Polling’s 10/4 US Senate scorecard – The Road To 51

Last week, JMC Analytics and Polling brought back the Scorecard for Senate races, and that scorecard showed Republicans with a plurality lead in Senate races. Has anything changed since last week ? First, let’s talk about the criteria JMC uses to score each of the 35 Senate races on the ballot this year:

Scorecard Criteria

Starting with this scorecard, JMC will examine polling data as published on RealClearPolitics for all Senate races for the previous 14 days (as we get into later October, this “lookback” will be compressed to 7 days) and get an average for each race. Once the averages are obtained, here is how JMC rates each race:

(1)   Safe Democratic or safe Republican (dark blue/red) – A candidate either has a polling average of at least 50% and/or a 10-point lead in the polls;

(2)   Lean Democratic or lean Republican (light blue/red) – A candidate has a 3-9 point lead in the polls;

(3)   Tossup (yellow) – A candidate’s lead is less than 3 points in the polls;

Given those criteria, this is the “state of the nation” as of the writing of this article:

Aggregate Dashboard statistics

Trump job approval: 52-46% Disapprove (53-44% disapprove last week)

Congressional job approval: 72-17% Disapprove (69-17% Disapprove last week)

Generic congressional vote:  48-40.5% Democratic (48-40% Democratic last week)

Direction of country: 54-39% wrong direction (53-41% wrong direction last week)

Senate race statistics

Current: 51 Republicans, 49 Democrats (technically, two of the Democrats are Independents who caucus with them)

Polling average: 50 Republicans, 47 Democrats, 3 Tossups (3 Democratic seats) (Last week’s polling average was 48 Republicans, 44 Democrats, 8 Tossups (3 Republican seats, 5 Democratic seats))

Commentary: Ordinarily, the aggregate statistics listed above would be deadly for the Republicans. Except that in the case of the US Senate, Democrats have a lot more seats to defend; more specifically, over half of their entire membership is up for re-election this year. This is a product of accumulated Democratic gains from this “lucky Democratic class” (discussed in additional detail last week’s scorecard).

In the aggregate, races have moved towards the Republicans in that polling has become more favorable for them in Tennessee, and (surprisingly) two polls in North Dakota showing Democratic Senator Heidi Heitkamp running behind her Republican challenger. This offsets Democratic movement against Republican held seats in Arizona and Nevada, where Democratic candidates have opened up leads outside of the 3-point threshold JMC uses for determining if a race is too close to call. It is worth noting, however, that even within thee margin of error, Democratic incumbents rated as being in “tossup” races have seen the needle move in their direction in Florida (from +1 to +2) and Missouri (from -1 to 0) since last week. Any continued movement in their direction would cause JMC to reclassify these races as “leans Democratic” in a future Scorecard.









Upcoming Events

As this article is being written, absentee and early voting activity has picked up: last week, best available estimates (courtesy of Dr Michael McDonald of ElectProject) showed that 7,300 votes in several states had already been returned and counted; this week, 91,700 have voted. Early voting will continue to accelerate: in the next 7 days, 9 more states (including Arizona, California, Iowa, and Ohio) will commence with early voting (early voting in Louisiana begins on October 23).