Speaking earlier today, Labour's Scottish Parliamentary Leader Iain Gray said:
"Next Thursday people in Scotland will be asked to make an important choice.
"They will be asked who they want to run the country and who they want making the important decisions that face us over the next five years.
"The reality means that on May 7 only one of two people will walk into Downing Street and become Prime Minister - Gordon Brown or David Cameron.
"Other parties will tell you that they can win but Alex Salmond isn't even standing in this election and Nick Clegg is never going to become Prime Minister.
"In fact we could even be faced with the very real prospect of the SNP or the Lib Dems or both actually supporting David Cameron as he walks into Number 10.
"So the real choice is whether you want Gordon Brown or David Cameron as Prime Minister.
"Gordon Brown's performance on the debate last night showed that when it comes to substance, experience and economic judgement, he towers over David Cameron.
"Gordon Brown knows what questions to ask. David Cameron didn't know how to answer them."