Dave Sharma says Liberals 'doing enough' on climate after Hewson attack

The Wentworth candidate rejects former leader's view that party's policy on emissions is inadequate

The Liberal candidate for Wentworth, Dave Sharma, said his party is "doing enough" and has "a good record" on climate change, after a blistering attack from former leader John Hewson, who said the party deserved a "drubbing" over its inaction on the issue.

Hewson told Guardian Australia that Liberal voters have a unique opportunity: register a protest now and return to the party at the general election in six months' time.