LAST year's winner, Party Politics, and the improving Zeta's Lad look the ones to take against the field in today's Grand National at Aintree, England, which is telecast live into Hongkong and bet on as the ninth event at Happy Valley tonight. Jim McGrath reports from Aintree that Party Politics is primed to become the first horse since the legendary Red Rum in 1973 and 1974 to record back-to-back successes. See today's Racing Post for all the up-to-date news, views and betting on the world's greatest steeplechase, run over a gruelling 7,200 metres and 30 daunting fences.