DES MOINES — The campaigns of Gov. Terry Branstad and his Democratic challenger, Sen. Jack Hatch, also used April 15, the deadline for filing federal income taxes, to trade barbs over their respective tax plans — or lack thereof.“Pucker up, Iowans — if Jack Hatch gets his way you can kiss your hard-earned money away” said Branstad campaign manager Jake Ketzner.Electing Hatch governor could lead to a “massive” state tax increase because Hatch opposes federal deductibility, Ketzner said.