National Republican Senatorial Committee Chairman John CornynJohn CornynAdministration works to assuage critics over ZTE deal Dem leaders request bipartisan meeting on Russia probe House easily passes prison reform bill backed by Trump MORE (Tex.) told reporters that the organization will anoint a candidate to challenge Senate Majority Leader Harry ReidHarry Mason ReidMcConnell not yet ready to change rules for Trump nominees The Hill's Morning Report — Sponsored by CVS Health — Trump’s love-hate relationship with the Senate Trump to press GOP on changing Senate rules 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 HellerKennedy retirement rumors shift into overdrive McConnell: Midterms will be 'very challenging' for GOP Singer Jason Mraz: Too much political 'combat' in Washington MORE is rumored to be the top choice amongst Nevada Republicans. But with Heller staying mum, Republican state Sen. Mark AmodeiMark Eugene AmodeiThe Hill's Morning Report — Sponsored by PhRMA — Tensions mount for House Republicans Koch-backed group to target some Republicans over spending vote in new ad campaign Republicans fear retribution for joining immigration revolt 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.