Those are the findings from the latest instalment of the PRWeek General Election online sentiment tracker, developed by Meltwater Buzz.
After indications from last week's report that the Lib Dems' online bubble may have burst, the party has defied forecasts by becoming the only one to register positive sentiment over the weekend. Another spike on 1 May saw the Lib Dems take a large lead over the Conservative Party.
The past 48 hours, however, have seen the three parties approaching parity. The Tories' online sentiment has slumped since the the third leaders' debate, while Labour - perhaps aided by the appearance of Tony Blair - has finally begun to trend upward.
By Monday of this week the Lib Dems were the only party with a positive sentiment score of 0.5 per cent. The Tories held second with -2 per cent, ahead of Labour's -3.5 per cent.