Labour party members in part of Cardiff say they want the best-known council leader in Wales out of his job.
BBC Wales understands that Cardiff Central Labour Party passed a motion of no confidence against Russell Goodway following the party's disastrous showing in a council by-election in the Pentwyn ward.
Russell Goodway has led the council since 1995
That by-election performance saw the Liberal Democrats score a landslide council by-election victory in their most vulnerable Cardiff county council seat.
Now, with only a year to go before the council elections, a majority amongst Cardiff Central Constituency Labour Party wants Russell Goodway out.
One senior source there described him as 'an electoral liability'.
The motion passed by cardiff Central Labour Party on 19 September read : "The party has no confidence in Russell Goodway as leader of the Labour Group on Cardiff County Council and asks him to step down immediately".
The motion of no confidence will be discussed at county Labour Party level on 7 October.
If a similar motion of no confidence were passed then this would leave Russell Goodway in a very vulnerable position.