The Slatest Scott Walker Endorses Ted Cruz By Ben Mathis-Lilley March 29, 201610:36 AM Scott Walker (right) endorsed Ted Cruz (left). Justin Sullivan/Getty Images Tweet Share Share Comment Tweet Share Share Comment (Wisconsin Gov.) Scott Walker endorsed (presidential candidate) Ted Cruz. The Wisconsin primary is on April 5. Read more Slate coverage of the GOP primary. Tweet Share Share Comment 2016 Campaign Ted Cruz GOP Primary 2016 Advertisement