Complex sentence: Bavin was elected as an alderman to Willoughby Municipal Council in 1910 but his attempts to enter federal parliament were thwarted, thrice losing Commonwealth Liberal Party pre-selection, due partly to his support for greater social welfare expenditure.
Split into simpler sentences: Bavin was elected as an alderman to Willoughby Municipal Council in 1910. Bavin's attempts to enter federal parliament were thwarted, thrice losing Commonwealth Liberal Party pre-selection, due partly to his support for greater social welfare expenditure.