Returning to campaign trail after the Manchester bombing and her attendance at the North Atlantic Treaty Organisation and G7 summits, the Prime Minister said the choice on June 8 came down to who voters wanted to represent Britain around the negotiating table in Brussels - her or Jeremy Corbyn.
The second most popular, with just over a thousand retweets, was a viewer quoting Jeremy Paxman, who said European Union negotiators might think Theresa May was a "blow-hard who collapses at the first sign of gunfire".
Earlier, during the question-and-answer session with the studio audience, the prime minister was heckled while she was answering questions about school funding.
The Tories were hoping to "avoid exposing the deficiencies of Theresa May to public scrutiny" by criticising the Labour leader, said Tom Watson, whose words were significant, given his own relationship with Mr Corbyn is often rancorous.
In discussions, Corbyn focussed on domestic policy issues like investment in education, health and policing.
The only point at which they rebelled was when she unwisely said Labour's figures don't add up.
When asked why he had once said that the death of Osama Bin Laden was a "tragedy", Corbyn said: "I think he should have been arrested and he should have been put on trial".
Jeremy Corbyn has reaffirmed that if elected Prime Minister in the General Election next week, he will not seek to abolish the monarchy.
"We're not going to do it", he said.
The PM said the United Kingdom faces the challenge of an ageing society, adding about her party's proposals: "It's about ensuring that nobody is going to have to sell their house to pay for care in their lifetime".
The prime minister said: "This hidden scandal, that takes place every day in homes across Britain, must be tackled head on".
She was pressed by Mr Paxman over her climbdowns on a proposed Budget hike in national insurance and her social care changes just days after they were unveiled in the Tories' election manifesto - and what it would mean for the Brexit negotiations.
What was expected to be a parade back into office with a massively increased majority had become a battle.
Replying to another man who said he liked the Labour manifesto but did not see him as "someone who could run this country", Mr Corbyn said he saw himself as a listening politician.
"We won't start the negotiations with megaphone diplomacy, threatening Europe with some kind of offshore tax haven on the shores of Europe", he said in a dig at May's efforts to handle Brexit. Joy, who asked what had happened to the £350m a week from Brussels, which was the only reason she had voted to leave the European Union, even said she was happy with May's answer, which was: "We won't be sending vast sums to money to the European Union and it is important that we get that best possible deal".
There are several possible reasons for this: Labour's popular manifesto policies and Theresa May's controversial social care plans and subsequent U-turn nearly certainly contributed strongly to a shift in public perceptions.