I can't find my old thread on this topic, so here I revive it.
A recent poll by Democracy Corps has Strickland and Portman tied in Ohio. The challenger Strickland has typically been slightly ahead despite reasonably-good approval ratings
for Portman. That is enough to take away the one Democratic edge for Strickland and make that race a true toss-up.
According to PPP, Senator Richard Burr (R-NC) has an abysmal 29% approval rating. If you think that bad, then Senator Tillis (not up until 2020) fares even worse at 26%. I can't say that an unpopular Senator from the same party hurts the chances of the other Senator (that does not seem to hurt Chuck Grassley in Iowa at 50%)... but it can't help.
http://www.publicpolicypolling.com/pdf/2015/PPP_Release_NC_102915.pdfApproval polls only.
Gray -- no incumbent at risk.
White -- retiring incumbent or (should it happen) an incumbent defeated in a primary, with "D" or "R" for the party in question.
Yellow -- incumbent under indictment or with a terminal diagnosis short of the completion of his term, with "D" or "R" for the party in question.
Light green -- Republican incumbent apparently running for re-election, no polls.
Light orange -- Democratic incumbent apparently running for re-election, no polls.
Blue -- Republican running for re-election with current polls available.
Red -- Democrat running for re-election with current polls available.
Tan -- incumbent Senator credibly running for another office. Approval and party (D, R) shown
Intensity percentage shows the first digit of the approval of the incumbent Senator --
"2" for approval between 20% and 30%, "3" for approval between 30% and 39%... "7" for approval between 70% and 79%.
Numbers are recent approval ratings for incumbent Senators if their approvals are below 55%. I'm not showing any number for any incumbent whose approval is 55% or higher because even this early that looks very safe.
An asterisk (*) is for an appointed incumbent (there are none now) because appointed pols have never shown their electability.
Approval only (although I might accept A/B/C/D/F) -- not favorability. I do not use any Excellent-Good-Fair-Poor ratings because "fair" is ambiguous. A fair performance by a 7-year-old violinist might impress you. A 'fair' performance by an adult violinist indicates something for which you would not want to buy a ticket.
NO PARTISAN POLLS.
What I see so far with incumbents:
App Rep Dem
<40 6 0
40-44 2 0
45-49 0 2
50-54 4 0
55-59 0 0
>60 0 2
retire 2 3
indict 0 1
oth off 2 0
no poll 7 2
Now -- my projection for the 2016 Senate election:
Sure R:
Alabama
Idaho
Iowa
North Dakota
South Carolina
South Dakota
Utah
Likely R:
Alaska
Kansas
Edge R:
Arizona
Arkansas
Georgia
Indiana
Kentucky
Louisiana
Tossups
Missouri
Nevada
North Carolina
Ohio
Pennsylvania
All but one of the current tossups are current R seats.
Edge D:
Colorado
Florida*
New Hampshire*
Likely D:
Oregon
Washington
Solid D:
California
Connecticut
Hawaii
Illinois*
Maryland
Vermont
Wisconsin*
*flip (so far all R to D)
New Jersey looks like a fairly sure hold should current, but indicted, Senator Bob Menendez be compelled to resign.