Politics is shaping up as the wild card for Australia’s central bank. The Reserve Bank of Australia is set to stick to the script when it updates economic forecasts later this week by predicting stronger growth, a gradual pickup in inflation and a slow drop in unemployment. But the RBA doesn’t appear to be factoring in that a tight election race, which needs to be held by May, risks spurring a hiring slump, says Bill Evans, chief economist at Westpac Banking Corp. -- just as it did around the...