The latest opinion poll has shown the highest-ever total of voters who don't know which political party they would vote for.

The Millward Brown poll for tomorrow's Sunday Independent shows 37 per cent of voters don't know who they'd support if a general election was being held tomorrow. 

The poll which interviewed 985 adults throughout Ireland from the 3rd to the 12th of August also shows that support for abolishing the Seanad is falling - and that a majority of voters would now prefer to retain and reform it instead.

Our political correspondent Gavan Reilly reports.