Complex sentence: He lost his House of Representatives seat in the 1951 federal election, unsuccessfully stood for Hume at the 1954 election before regaining the seat in 1955, and remaining in parliament until his defeat at the 1961 election.
Split into simpler sentences: He lost his seat in the 1951 federal election and unsuccessfully stood for Hume at the subsequent 1954 election. However, he regained the seat at the 1955 election and remained in parliament until his defeat at the 1961 election.