The Chair of the National Republican Senatorial Committee said Thursday that Delaware's Senate contest between Tea Party-favorite Christine O'Donnell and Democrat Chris CoonsChristopher (Chris) Andrew CoonsSenators introduce bipartisan bill restricting police use of facial recognition tech Centrist Democrats seize on state election wins to rail against Warren's agenda Bill Gates visits Capitol to discuss climate change with new Senate caucus MORE "looks like it's not as competitive as other races across the country."

Speaking to reporters after an event at the National Press Club, Sen. John CornynJohn CornynGOP senators balk at lengthy impeachment trial Overnight Health Care: Trump officials making changes to drug pricing proposal | House panel advances flavored e-cig ban | Senators press FDA tobacco chief on vaping ban Senate GOP waves Trump off early motion to dismiss impeachment charges MORE (R-Texas) reiterated the NRSC's backing of O'Donnell and said the committee would support her financially "as appropriate." 


But Cornyn suggested that without Rep. Mike Castle (R-Del.) as the Republican nominee, the seat is less winnable for his party this fall.

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"It's no secret that I believe Castle would have won that race handily," Cornyn said. 

On Wednesday, Castle decided against waging a write-in bid this fall, an option he told reporters last week that he was considering. The latest polling in the race gives Coons a double-digit lead over O'Donnell. 

Cornyn also predicted victory for Republican businessman John Raese over Gov. Joe ManchinJoseph (Joe) ManchinFormer coal exec Don Blankenship launches third-party presidential bid Centrist Democrats seize on state election wins to rail against Warren's agenda Overnight Energy: Senate eyes nixing 'forever chemicals' fix from defense bill | Former Obama EPA chief named CEO of green group | Senate reviews Interior, FERC nominees criticized on ethics MORE (D-W.Va.) in West Virginia's Senate election this fall. The NRSC launched a $1.2 million ad buy targeting Manchin last week in a race that polls have shown is unexpectedly close.