A father of five, Mr. Amess first entered Parliament in 1983, when Margaret Thatcher led the Conservative Party. He first represented the Basildon headquarters in Essex, where his election solidified a wave of support for the Tories in that region. He changed constituencies to Southend West in 1997, a seat he held in every subsequent general election.
Raised as a Roman Catholic, Mr. Amess was known as a social conservative, an anti-abortion activist and a staunch supporter of the British monarchy. He was also known for his campaign to gain town status for the seaside town of Southend. Among its main causes was animal welfare.
In 2016 Ms Cox died after being shot and stabbed by a right-wing extremist during a meeting in her parliamentary constituency of West Yorkshire. The attack took place ahead of the Brexit referendum, and the assailant, Thomas Mair, an unemployed gardener, was sentenced to life in prison for the murder.
Ms Cox’s husband Brendan Cox reacted to news of the attack on Mr Amess on Friday in a post on Twitter.
“Attacking our elected officials is an attack on democracy itself,” he wrote. “There is no excuse, no justification. It’s as loose as it gets.