The Liberal Democrats have launched an election poster deliberately parodying a Tory placard, which was mocked and parodied on social media.

Nick Clegg's party plan to attack Labour and the Conservatives for "wanting to veer off course" by threatening the economic recovery by "either borrowing too much or cutting too much".

"The Conservatives want to veer off from the sensible economic plan we have set in coalition, towards much harsher cuts than necessary to public services, especially in education," said the deputy prime minister.

"And Labour want to take us in the direction of reckless borrowing, threatening the economic recovery.

He added: "Britain needs a liberal voice in government, keeping the country on track, and stopping Labour and the Conservatives from lurching to the extremes of left and right.

"Liberal Democrats will cut less than the Tories and borrow less than Labour – giving a heart to the Conservatives and a backbone to Labour.

"Don't take the wrong turn. Only the Liberal Democrats can deliver both a stronger economy and a fairer society, creating opportunity for everyone."

The poster comes with 100 days to go until the general election in May and will follow the original Tory poster, which was criticised and mocked on social media sites.

The latest opinion poll from Lord Ashcroft put Labour and the Tories neck and neck on 32%, with Ukip on 15%, the Liberal Democrats on 6% and the Greens on 9%.