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Ted Cruz is leading in Iowa. Can it last through February?

With victory in Iowa’s February 1 caucus within reach, Senator Ted Cruz is sharpening his focus on the state this week.

Republican presidential candidate Ted Cruz speaks an aide ahead of a live television interview at Prime Time Restaurant in Guthrie Center, Iowa Jan. 4, 2016. (Photo by Mark Kauzlarich/Reuters)
Republican presidential candidate Ted Cruz speaks an aide ahead of a live television interview at Prime Time Restaurant in Guthrie Center, Iowa Jan. 4, 2016.REUTERS

Benjy Sarlin