The splash in The Sun supported the Conservatives, listing three reasons to vote for them including the need to "stop the SNP running the country".
Meanwhile, its sister paper the Scottish Sun led with the headline ‘Stur Wars’ – providing full backing to SNP leader Nicola Sturgeon.
#ScottishSun has started trending on Twitter, with the hashtag generating 11.7k mentions at the time of publication.
Stewart Wood, a Labour peer, shadow cabinet member and adviser to Ed Miliband, called out Rupert Murdoch on Twitter, claiming the antics of his papers would not escape scrutiny.
Dear Rupert Murdoch, the internet arrived in Scotland a few years ago now. They & we all know what you're doing. pic.twitter.com/8WkFRBwDj2— Stewart Wood (@StewartWood) April 30, 2015
Dylan Sharpe, head of PR at The Sun, jumped in quickly to defend the national.
Biggest newspaper in Scotland backs the SNP. The biggest newspaper in Eng & Wales backs the Tories. Labour supporters get upset. Go figure.— Dylan Sharpe (@dylsharpe) April 30, 2015
He also claimed that Labour did not notice when different editorial stances were taken previously.
However, a Twitter user pointed out that the papers Sharpe was using to demonstrate his point were from two different elections - the 2010 general election and Scottish party election.
Despite the papers having separate editorial teams, this has led to widespread ridicule on Twitter and appears to be generating more positive coverage for Labour.