Will conservatives be able to draft a third party candidate?

[StateBoiler]

Names listed in a WaPo op-ed and a thehill.com list:

-Former Sen. Tom Coburn of Oklahoma
-Former Gov. Rick Perry of Texas
-Retired Army Gen. Ray Odierno
-Sen. Ben Sasse of Nebraska
-Former Gov. Mitt Romney of Massachusetts, 2012 Republican presidential nominee
-Rep. Justin Amash of Michigan
-Sen. Rand Paul of Kentucky
-Gov. Nikki Haley of South Carolina
-Retired Marine Corps Gen. John Kelly
-Former Gov. Gary Johnson of New Mexico, 2012 and likely 2016 Libertarian presidential nominee

[StateBoiler]

In regards to filing deadlines, apparently John Anderson won lawsuits against them running for president in 1980, and Bill Kristol in an editorial published today says:

"Getting an independent candidate on the ballot in all 50 states is less difficult than conventional wisdom has it. The only states whose ballot access deadlines are before the end of June are Texas and North Carolina, and those deadlines are susceptible to legal challenges that are being drawn up as I write."