Sixty-nine percent of Scots support the top rate of income tax being raised from 45p to 50p, a poll suggests.

The research, commissioned by Unison Scotland, suggests widespread public support for a 50p rate. When asked if they support or oppose the policy 69% indicated that they either strongly or somewhat support the proposal, with just 14% saying that they oppose it.

Income tax has been a major issue in the Holyrood election campaign so far.

A range of top rates are being put forward by the parties:

The issue of a 1p rise across the other tax bands has also been a topic of discussion in the campaign. Both Labour and the Liberal Democrats support a 1p rise in the basic rate.

In the poll 43% of voters said they would pay 1p extra in income tax to fund public services and a further 23% answered that they might be willing to do so. Only 25% said that they would not be interested in paying extra.

Among party supporters, SNP and Labour voters were the strongest backers of a 1p increase. The poll highlights that 51% of each parties' supporters said they would pay a penny extra in income tax to fund services.

The poll also asked voters what they believed the three most important issues were for them at this election:

Following the 2014 independence referendum, the question of news dissemination and trust in established media institutions has come to the fore.

Only 2% of those asked stated that they "completely trust" journalists and the media. Meanwhile 16% of those polled said that they "somewhat trust" journalists.

The largest group who "completely distrust" journalists and the media were those who identified as SNP supporters. Nineteen percent of this group indicated that they completely distrusted the media, higher than the average of 15%.

Respondents said they intended to vote as follows in the Scottish Parliament election:

When these results are entered into the Scotland Votes seat predictor it indicates a second SNP majority government will be formed after the election.