The YouGov poll for tomorrow's Sunday Times shows a 5 point lead for the Conservatives...
Conservatives 41 (-1)
Labour 36 (+3)
LibDem 14 (-1)
UK Polling Report says this is the lowest Tory lead for a year. Labour's extra support is coming from the LibDems and minor parties. Political Betting says the Tories' only consolation is that they remain above 40%. However, if this poll were repeated at an election it would produce a hung parliament.
There's another poll out later for the Independent on Sunday. More later.
UPDATE: IoS poll is
Conservatives 43 (+4)
Labour 32 (+1)
LibDem 12 (-4)
UK Polling report analysis HERE.