He and his supporters built up the Tory party that ended the so called Whig Supremacy which dominated British politics from ~1715. It wasn't realised initially in the colonies that much of what Parliament was doing was being fully supported by the king. There was quite a power struggle but after defeat in the war against the Bourbon powers, American rebels and Dutch while the Tory party remained in power Parliamentary interests regained much ground lost to the monarchy since 1763.
Very interesting - Here's the specifics of party alternation I looked up-
Whigs - 1721-1762, starting with Walpole
Tories - 1762-1763, Bute
Whigs - 1763-1770, starting with Grenville
Tories - 1770-1782, North
Whigs - 1782-1783 - Rockingham, Shelburne, Portland
Tories - 1784-1806, starting with Pitt
