By 1713 Thomas Wynn of Glynllivon, the leader of the local Whigs, had won control of the constituency from the Tory families by the mass creation of non-resident voters in the boroughs of Nevin and Pwllheli, after which the seat remained under Glynllivon dominance for over 70 years. The only challenge, in 1722, was instigated by William Owen of Brogyntyn, who had retaliated by admitting many non-resident voters in his borough of Criccieth. In 1724 Wynn control was consolidated by the acquisition of the constableship of Caernarvon castle, carrying with it the mayoralty of Caernarvon.

At the beginning of the eighteenth century Caernarvonshire was controlled by a group of Tory families, headed by the Bulkeleys of Baron Hill in Anglesey. In 1713, however, William Griffith of Cefnamwlch, the Tory Member for the Caernarvon Boroughs, allied himself with the local Whigs, led by Thomas Wynn of Glynllivon, and was returned for the county against the official Tory candidate.

The control of Brecon was disputed between two local Whig families, Morgan of Tredegar and Jeffreys of the Priory. In 1715 the sitting Member, supported by the Tredegar interest, was returned unopposed. In 1722 William Morgan of Tredegar was returned without a contest, but made his election for Monmouthshire, putting up his younger brother, Thomas, who was returned both on this occasion and in 1727 against Priory candidates.

From 1705 to 1734 Breconshire returned successively two local Tory country gentlemen, Sir Edward Williams of Gwernyfed and William Gwyn Vaughan of Trebarried. In December 1733 a report on the county was sent to Walpole, stating that there were 1,200 freeholders, of whom Roger Jones of Buckland, who had stood against Vaughan unsuccessfully in 1722, could poll 400; while 150 each were at the command of John Jeffreys of the Priory and of Sir David Williams of Gwernyfed. According to the report,

Beaumaris was controlled by the Bulkeleys of Baron Hill, Tories, who under George I returned Henry Bertie, the 4th Lord Bulkeley’s brother-in-law, defeating William Bodvell, a Whig, in 1722. After Bodvell’s defeat a petition was presented reviving the claim of the borough of Newborough to share in the representation, but no decision was reached on it.

At George I’s accession Anglesey was dominated by the Bulkeleys of Baron Hill, a Tory family, whose tenure of the seat had been challenged in Anne’s reign by the local Whigs under Owen Meyrick of Bodorgan. In 1715 Lord Bulkeley, to avoid the trouble and expense of a contest, came to an agreement with Meyrick, under which Meyrick was returned unopposed for the county, on an undertaking to resign at Lord Bulkeley’s request. But in 1722, when Lord Bulkeley decided to stand again, Meyrick refused to honour his pledge and was defeated after a bitter and expensive contest.

Winchelsea was a Treasury borough which by 1715 had been allowed to fall under the control of two wealthy business men, George Dodington and Robert Bristow. On Dodington’s death his interest passed to his nephew, George Bubb Dodington, who from 1722 chose to sit for Bridgwater, returning ministerial nominees till 1734, when he brought in his brother-in-law E. H. Beaghan.

In practice the right of election at Seaford, a decayed port, was confined to inhabitants paying scot and lot,T. Hurdis to Newcastle, 24 June 1747, Add. 32711, f. 499. though this was not confirmed by the House of Commons till 1761. From 1715 Members were returned on the recommendation of the Duke of Newcastle, whose estate of Bishopstone adjoined the town and who controlled the local Treasury patronage. In 1722 the voters, numbering 51, signed a letter to Sir William Gage and Sir Philip Yorke, stating that:

The chief interests at Sandwich were those of the Administration, based on admiralty and customs patronage, and of the Oxendens, a neighbouring Whig family, who held one seat from 1713 to 1754. The other seat was usually filled by the secretary to the Admiralty.

Rye was managed by giving the corporation posts in the customs service, with which this stagnant port was well provided, having in 1729 a collector, a deputy collector, and twenty other officers.S. H. Nulle, The Duke of Newcastle, 40 n. 2. Under George I and George II the patronage was administered through Sir John Norris and Phillips Gybbon, who had been adopted by the corporation as their patrons, sharing the representation till their deaths in 1749 and 1762.