Both Lt. Gov. David Dewhurst and former Texas Solicitor General Ted Cruz are employing their highest-profile endorsers in hopes of motivating voters in the last week of early voting for the May 29 primary.

The Cruz camp is using an automated call featuring Sarah Palin to primary voters. Some of those calls appear to have been inadvertently sent to Kansas numbers as a reporter with the Topeka Capital-Journal reported receiving one.

"I'm Sarah Palin. Join me. Choose Cruz for Senate," Palin says in the call.

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Dewhurst released a new ad Monday featuring Perry. The campaign said the ad will air in markets across the state. 

"Our country needs him, and so does Texas," Perry says in the ad.

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