"By making attractive announcements in Budget, government can grab votes indirectly," Thackeray said, addressing a statewide gathering of Sena workers here.
The Sena president asked his party MPs to meet the President and request him to postpone the Budget beyond polls.
Congress, Left, Samajwadi Party and some others have already represented to the Election Commission not to allow the Centre to present the Budget during poll process.
Without naming Narendra Modi, Thackeray said, "I don't have any assurances to give you, but the Santa Claus is giving the people a lot of assurances."
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Modi recently laid foundation stone of Pune Metro project but the National Green Tribunal stayed the work, and hence there should be proper planning for the Mumbai-Ahmedabad bullet train project (to avoid such embarrassment), he said.
On prospects of alliance with BJP for Mumbai civic polls, he said Sena will not beg for seats. "It (alliance) will be on our terms and conditions. Shiv Sainiks' opinion will be considered while taking the decision," Uddhav said.
He also hit out at NABARD and the Union Government for getting "rural banks in trouble" with the decision of demonetisation.