In February,Senator John Thune told Mark Twain Elementary second-graders he wasn't running for President.
In April, Senator Thune said nope, not running for President.
This week, Senator Thune tells The Hill pretty much the same thing—never say never, but right now, no:
The things I need to be doing right now I’m not doing and a lot of other people are.... But you never close the door on anything, you never know what’s going to happen. But as of right now, no.
...I am not actively pursuing [the presidency] at the moment; I’ve got my work cut out for me in the Senate.... I think being in the majority, and if all things work out here, the committee chairmanship, is going to keep me extremely busy [John Thune, quoted in Jonathan Easley, "Sen. Thune: Not Closing Door on 2016 Run," The Hill, 2014.12.15].
In November he weaved faintly left on climate change. Saturday he weaved right in backing Senator Ted Cruz's futile parliamentary gambit to derail the spending bill on Tea Partyism. We could read these moves as Presidentially exploratory pokes and prods. But I maintain as I did last summer that Thune won't do it.
So do the British oddsmakers. Thune doesn't even make their lists, which include Michele Bachman, David Brat, and Arnold Schwarzenegger. Thune has just crossed PredictWise threshold: they compile a bunch of online prediction markets and give our senior Senator a 0.1% chance of winning the Republican nomination, behind 25 other possibilities.
South Dakota Dems, assume Thune is running for re-election to the Senate. Find your best candidate and plan to run against him here in South Dakota.