Consumer confidence has fallen for a third straight week amid uncertainty about the election result and the outlook for the global economy.

The ANZ-Roy Morgan Consumer Confidence Index fell 0.5 per cent in the week ending July 10 to 115.2, which is below the four-week average of 116.7.

For only the second time since 2010, all industries surveyed by NAB are recording positive business conditions. Credit:Bloomberg

ANZ head of Australian economics Felicity Emmett said confidence had fallen almost three per cent, which partly reversed lifts in May and early June, when confidence reached a two and a half year high.

"Confidence has been buffeted by uncertainty surrounding the domestic political outlook, as well as concerns over global growth," she said in a statement.