Iowa governor questions Gingrich's discipline

Governor of Iowa Terry Branstad speaks during the 2011 Governors Summit of U.S. Chamber of Commerce June 20, 2011 in Washington, DC. The summit was to focus on policies that help states to attract businesses and to improve the economy. Photo by Alex Wong/Getty Images

SIOUX CITY, Iowa - Republican Iowa Gov. Terry Branstad says he's unsure presidential candidate Newt Gingrich has the discipline and focus to be president.

In an Associated Press interview Thursday, Branstad was asked if the former House speaker, who is leading in Iowa polls, had the discipline to be president.

Branstad said of Gingrich, "Whether he has the discipline and the focus, I don't know."

Branstad says he probably won't endorse a candidate before the Jan. 3 caucuses in Iowa.

Branstad describes the Republican race in Iowa as volatile and says that missteps count in the final days.

Full CBS News coverage: Newt Gingrich

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