Baillie, who had substantial banking and mercantile interests in Bristol, was nominated for the city without his consent in 1820 by radicals dissatisfied with the official Whig candidate; he was not present during the proceedings and came bottom of the poll.
The Wellington ministry listed him among the ‘doubtful doubtfuls’ and he voted against them in the crucial civil list division, 15 Nov. 1830. He presented several Bristol petitions for repeal of the assessed taxes, 17 Dec., and stated that if the Grey ministry did not act he would support Alderman Waithman’s forthcoming motion on the subject. He supported the Bristol anti-slavery petition, 20 Dec. 1830, maintaining that once the principle of compensation had been ‘fairly admitted’ he would ‘as a West India proprietor ... be most happy to give my cordial concurrence to every measure that can promote the emancipation of the slaves and further the wishes of the people of this country’. He attended the reform meeting at Bristol, 21 Jan. 1831, when he declared that his views were ‘completely in accordance’ with his constituents’ but declined to pledge support for the ballot.
He divided for the second reading of the reintroduced bill, 6 July, and generally supported its details, though he voted in the minority to give Stoke two Members, 4 Aug. 1831. He voted for the bill’s passage, 21 Sept., the second reading of the Scottish bill, 23 Sept., and Lord Ebrington’s confidence motion, 10 Oct. He presented a petition from the Bristol West India interest against renewal of the Sugar Refinery Act, 18 Aug., and two parish petitions in favour of the vestries bill, 23 Aug. He divided for the second reading of the revised reform bill, 17 Dec. 1831, its details, the third reading, 22 Mar., and Ebrington’s motion for an address asking the king to appoint only ministers committed to carrying an unimpaired measure, 10 May 1832. He presented, without comment, a Bristol petition for withholding supplies until the Lords passed the bill, 25 May. He voted against increased county representation for Scotland, 1 June. He divided against ministers on the Russian-Dutch loan, 26 Jan., was absent from the divisions on this issue in July, but voted in the minorities against relief to the crown colonies, 3 Aug., and the Greek loan, 6 Aug. He voted with government on relations with Portugal, 9 Feb. He presented a Bristol petition against the labourers in agriculture bill, which he regarded as a ‘general Enclosure Act’, 29 June 1832. At the general election later that year he was returned for Bristol in second place, behind a Conservative but ahead of two advanced Liberals, after deliberately abstaining from the proceedings and avoiding any commitments that ‘could possibly compromise the honour and consistency of my ... character’. He sat as an advocate of ‘Whig principles’ until his defeat in 1835.
