Noted here:
[A] meeting among a small group of “GOP operatives” and “conservative leaders" ... included talk of a third-party alternative to take on Trump in the general election.
One of the meeting’s participants, conservative radio host Erick Erickson, told Fox News on Thursday that the idea of a third-party bid was proposed at the meeting as a “final fallback option” to stop Trump.
... Earlier this year, Erickson publicly and privately pitched a potential third-party bid by former Texas Gov. Rick Perry, whose presidential campaigns in 2012 and this cycle did not catch fire. The effort became serious enough that a group of donors contacted Perry directly a few weeks ago, asking him to consider it, but he would not entertain the idea.