BRISTOL PALIN has slammed the door in her mother SARAH’s face – she ordered her politician mom to stay out of her house.

The 20-year-old former “Dancing with the Stars” contestant has had enough of Mama Grizzly’s control­ling ways and has grown sick of her politics, The ENQUIRER learned.

And after a recent blowup, Bristol told Sarah to stay away from her new home in Maricopa, Ariz.

Bristol has become much more liberal since she spent time in L.A., while appearing on “DWTS,” and then moved to her new digs.

To mom’s dismay, Bristol plans to use her Arizona home as a launch­ing point for more Hollywood oppor­tunities.

“Bristol is complete­ly rebelling against her mother – now that she’s ex­periencing life outside of Alaska and away from Sarah,” said an insider.

“She has opened her eyes and real­ized how sheltered and programmed she was.

“When Bristol told Sarah that she is thinking of supporting gay marriage and doesn’t believe religion should have anything to do with equal rights for all, Sarah began fuming and told her she better never go public with that thought, fearing it would hurt her political career.

“Bristol told her mother that she’s a grown woman who makes her own living and is free to be­lieve what she wants. If Sarah doesn’t accept her, she isn’t welcome in her home.”

In February, The ENQUIERER reported that Bristol – who has 2-year-old son Tripp with ex-fiance Levi Johnston – sent Sar­ah into an uproar after agreeing to work with her moth­er’s sworn enemy, Michelle Obama, 47, on an upcoming project.

“Bristol flat out told her that she needs to back off.

"She knows the only way that Sarah will stop being so controlling is to ban her from her home!”