Chelsea Nain

Cheney most recently worked in the State Department handling Middle East affairs.

While her father and President George W. Bush have both vowed to remain neutral as their fellow Republicans battle it out for the party’s presidential nomination, the endorsement is likely to be well received among conservatives who comprise a critical primary voting bloc in both Florida, which votes Tuesday, and the 22 states voting Feb. 5.

Romney has also enjoyed the support of aides with ties to the Bush family, including top assistants to former Florida Gov. Jeb Bush and former President George H.W. Bush.

Liz Cheney, the mother of five children, said in a statement: “Throughout his campaign, (Romney) has distinguished himself as a leader who can guide our country with a clear vision for overcoming the threats we face today. … I look forward to working with Governor Romney because he is the leader our country needs.”

Romney said Liz Cheney brings the campaign “years of experience helping to formulate America’s foreign policy and to advance democracy and reform in the Middle East.