National Republican Senatorial Committee Chairman John CornynJohn CornynMcCarthy: ‘No deadline on DACA’ NSA spying program overcomes key Senate hurdle Hoyer suggests Dems won't support spending bill without DACA fix MORE (Tex.) told reporters that the organization will anoint a candidate to challenge Senate Majority Leader Harry ReidHarry Mason ReidDems search for winning playbook Dems face hard choice for State of the Union response The Memo: Immigration battle tests activists’ muscle MORE (D) in 2010.

According to the Las Vegas Sun, Cornyn told a group of reporters "We don't have a candidate yet...We're working on it. There'll be hopefully some news here in the coming weeks."

Cornyn's announcement, while unspecific, has heightened the speculation surrounding which potential challenger the NRSC will choose. Rep. Dean HellerDean Arthur HellerDemocrats search for 51st net neutrality vote Nevada Dems unveil 2018 campaign mascot: 'Mitch McTurtle' Senate campaign fundraising reports roll in MORE is rumored to be the top choice amongst Nevada Republicans. But with Heller staying mum, Republican state Sen. Mark AmodeiMark Eugene AmodeiDACA advocates see efforts gaining steam in the House Overnight Finance: House passes .2T funding package for 2018 | FTC launches Equifax probe | Mnuchin defends honeymoon jet request | House scraps measure to boost credit union regulator oversight MORE visited Capitol Hill this week and told the Sun early last month "If Dean doesn't, I'll consider it."

Republicans might not be in a rush to appoint a candidate to run against Reid, whose approval ratings have dipped below 40 percent. But Republicans are still watchful that the NRSC chooses a candidate who has a strong chance to unseat the four-term Senator next year.