The local share price index futures rose 0.5 percent or 24 points to 5,269, trading at a 0.2 percent premium to the underlying S&P/ASX 200 index close. The benchmark finished marginally higher on Tuesday.
US market participants cited projections which showed Clinton with an early lead among voters in Florida, a must-win state for Trump.
New Zealand's benchmark S&P/NZX 50 index rose 0.21 percent or 14.41 points to 6908.77 in early trade, its third straight session of gains.