In the final days before the Wisconsin primary, Republican presidential candidate Ted Cruz strengthened his efforts against rival John Kasich by launching a television ad and sending mailers attacking the Ohio governor.<br />The 30-second television ad released by the Cruz campaign this weekend explores Kasich's ties to Worthington Industries, a Fortune 500 company in Ohio that last year laid off hundreds of employees, including 115 in Ohio.<br />In addition to the television ad, the Cruz campaign also sent mailers to Wisconsinites attacking Kasich's spending policy as governor of Ohio, and his stances on guns and the military.<br />This is the first time the Cruz campaign has run a negative ad against Kasich.