This week's general election offers voters a "golden opportunity" to end austerity across the UK, Scottish First Minister Nicola Sturgeon has said.
Ms Sturgeon said the poll on 8 June will give people the chance to say "enough is enough" and urged them to back the nationalists, saying "now more than ever it is vital that we have strong SNP voices standing up for Scotland".
Ms Sturgeon has taken to the skies in the final weekend of election campaigning, visiting six key constituencies over the course of today in a branded helicopter - dubbed the "Nicolopter".
As polling day nears, the Conservative lead over Labour across the UK seems to be shrinking, leading to speculation the SNP could become involved in a "progressive alliance" at Westminster.
Mrs May is on track to win 308 seats in Britain's parliament in the election, 18 short of a 326-seat majority, according to a projection by polling company YouGov today.
The Conservatives had 330 seats when the snap election was called in April.
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Yesterday, YouGov said its model suggested the Conservatives were on course to win 313 seats, 13 seats short of a majority.
The opposition Labour Party is likely to win 261 seats, YouGov's model showed today, up from 257 on yesterday.
The SNP won 56 of the 59 seats in Scotland in the 2015 general election, a record result which they will struggle to match this time round.
She said: "The Tories' austerity agenda has failed on every count - not only has it choked off the economic recovery but the years of under-investment have put huge pressure on public services across the UK.
"We simply can't go on with more of the same but that is exactly what the Tories are planning to do - and this snap election has presented a golden opportunity for voters across Scotland to say enough is enough.
"With polls tightening across the UK, the votes of people across Scotland could determine the size of Theresa May's majority in the next parliament," she said.
Meanwhile, Scottish Liberal Democrat leader Willie Rennie has said SNP/Liberal Democrat marginal seats across the country could decide whether an independence referendum takes place.
He said: "The race is on to cancel the next independence referendum.
"The SNP will use any victories to advance their campaign for independence with a referendum within months.
"But voting Liberal Democrat in these key Liberal Democrat/SNP marginals could cancel that referendum.
"Liberal Democrats are sprinting to the finish line. A handful of votes could be the difference between winning and losing," he said.
