(CNN) - Any candidate hoping to score last minute support from Rep. Steve King of Iowa before the state's caucuses won't have much luck.
The popular conservative announced on Twitter Monday that he won't be giving out his highly-coveted endorsement for the nation's first Republican presidential nominating contest on Tuesday.
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King has met with several of the candidates, even taking pheasant hunting trips over the last few months, but had not yet indicated whom he would endorse.
Earlier Monday, King told CNN he was withholding his support, waiting to feel a "conviction" for the right candidate.
"It would have been really nice to have had that epiphany and made that endorsement," King said earlier in the day on CNN's "Starting Point." "It has to be a conviction. Until then, I'm not able to do that."