The survey puts the coalition on 52 per cent to Labor's 48 per cent on a two-party-preferred basis, unchanged from the pollster's reading of support in the previous week.
Prime Minister Anthony Albanese and Opposition Leader Peter Dutton both visited Western Australia this week in what is seen as unofficial election campaigning.
On primary votes, Roy Morgan said the coalition was down 1.5 points to 40.5 per cent while Labor's support was up one point to 29.5 per cent.
Support for the Greens fell 1.5 points to 11.5 per cent while backing for the other minor parties category slipped 0.5 points to 3.5 per cent.
One Nation gained two points to six per cent and support for independent candidates rose 0.5 per cent to nine per cent.
Several different polls give Opposition Leader Peter Dutton's coalition a lead over the government. (Richard Wainwright/AAP PHOTOS)
The Roy Morgan poll's 52-48 result is similar to other recent surveys: both a Newspoll published on Monday and a YouGov poll from earlier in January had the coalition ahead by 51 per cent to 49 per cent on a two-party-preferred basis.
The Roy Morgan survey of 1567 voters was conducted on January 20-26.
Roy Morgan CEO Michele Levine said the Greens had registered their lowest level of support since late 2023 during a week in which key issues included anti-Semitism, a ceasefire in the Gaza Strip and the annual debate about Australia Day.
"Greens leader Adam Bandt has been largely silent on the rising problem of anti-Semitism in the community and last week credited Australian street protests with helping bring about the current ceasefire in the conflict between Israel and Hamas in Gaza," Ms Levine said.
Mr Albanese has yet to announce a date for the election but it must take place by May 17.
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