Cameron and Miliband will miss their usual weekly parliamentary debate in London but said: "We want to be listening and talking to voters about the huge choice they face. Our message to the Scottish people will be simple: 'We want you to stay'."
The statement was also signed by Deputy Prime Minister Nick Clegg, leader of the Liberal Democrats, who will also hit the campaign trail in Scotland.
The visits come after a poll on Sunday which showed the "Yes" camp ahead for the first time, while experts say the vote it was too close to call.
"There is a lot that divides us -- but there's one thing on which we agree passionately: the United Kingdom is better together. That's why all of us are agreed the right place for us to be tomorrow is in Scotland, not at prime minister's questions in Westminster," their statement said.
"Yes" campaigners say last-ditch plans including the promise of greater powers for Scotland even in the event of a "No" vote are a "panicky" reaction to the rise in pro-independence sentiment.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
