At the December
1923 general election, she was elected as one of the two
Members of Parliament (MP) for
Norwich. In doing so, she became one of the first three women —
Margaret Bondfield and
Susan Lawrence were the others — to be elected as Labour MPs. When Parliament re-opened on 6 January 1924, Jewson arrived early to ensure she had a seat, but she and Bondfield caused some controversy by not wearing a hat. A few days later,
Christine Murrell hosted a dinner for the ladies who had been elected as MPs and discussion turned to the hats. While,
Nancy Astor made light of the topic, Jewson was clear that the women were "not in Parliament to discuss dress or
millinery, but to do something" and then carried on attending without a hat. At the end of January 1924, during a train strike, Jewson refused to use the strikebreaking trains to travel back to her constituency in Norwich. The press reported on how she would "walk" the 115 miles back. In reality, she and another trade union official hitched rides on brick
cart, a brewer's lorry and a furniture van. They also used buses and trains once the strike was over. In February, 1924, Jewson and
Mabel Philipson became the first women to sit on the Parliamentary Kitchen Committee. On 29 February, Jewson joined
William Adamson in putting forward a motion to reduce the age that women could vote from 30 to 21, the same age as men. Estimates at the time suggested that this proposal would have meant half a million more women than men on the
electoral register, and that 70% of wage earning women at the time were currently unable to vote. Jewson's speech on the matter was her first in Parliament, and she went on to act as a
teller for the vote alongside the
Duchess of Atholl, the first time women had done so. The vote was returned at 288 to 72, paving the way for
Representation of the People (Equal Franchise) Act 1928. Jewson was appointed as part of committee to look at problems with Child Adoption and another to look into ensuring that the poor could access legal advice. She also broadcast talks on the radio, such as "Psychology and Domestic Service". Despite a campaign over the summer of 1924, focussed on "Faith, Hope and Dorothy", she lost her seat at the
1924 general election, and never returned to
Parliament, despite running in 1929 and 1931. ==Later career==