Combined polls point to Turnbull win

A collection of opinion polls and betting markets points to a comfortable coalition win at the federal election, likely in July.

MetaPoll, which has aggregated the responses of 18,000 voters in public opinion polls over the past four weeks, has the coalition leading Labor 51.8-48.2 per cent after preferences.

If that result was repeated on polling day, the government would lose six seats, but still have a majority of more than 20 MPs over Labor.

The Senate is a different story, with Liberal Democrat David Leyonhjelm predicting the crossbench would continue to hold the balance of power after a double-dissolution election.

"It will still be there," the senator told the National Press Club in Canberra on Wednesday.