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Republican presidential candidate Sen. Ted Cruz (R-TX) speaks to crowd during a campaign rally at Ottawa Farms December 19, 2015 in Bloomingdale, Georgia.
Republican presidential candidate Sen. Ted Cruz (R-TX) speaks to crowd during a campaign rally at Ottawa Farms December 19, 2015 in Bloomingdale, Georgia.

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    Will Ted Cruz's momentum in Iowa last?

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Will Ted Cruz's momentum in Iowa last?

After launching a new ad in Iowa to attract evangelicals, will Cruz be able to make his momentum in the polls last as his critics begin taking aim?

Will Ted Cruz's momentum in Iowa last?

After launching a new ad in Iowa to attract evangelicals, will Cruz be able to make his momentum in the polls last as his critics begin taking aim?