President Donald Trump is running out of Republican Party factions to offend and alienate after firing Steve Bannon, the White House chief strategist who was a bridge to the president’s conservative base.

Along with Friday’s blow to his base, a defensive and sometimes erratic Trump in the past few weeks alone has attacked once-supportive business leaders, GOP lawmakers and voters eager to distance themselves from far-right and white supremacist protesters in Charlottesville, Virginia. He’s also lashed out at Senate Majority Leader Mitch McConnell, a key player in any effort to push forward his legislative agenda.

On paper, Trump, whose candidacy amounted to a hostile takeover of the GOP, appears increasingly on an island within the party — with no legislative victory in sight and dwindling approval ratings.

Trump’s increasingly combative and defiant actions in recent weeks has eroded support from key groups that helped deliver him the White House. Several prominent polls show his job approval rating in the high 30s overall — and while support for him is still relatively high among Republicans, that figure is also sliding downward.