They voted in favour of a Labour-supported amendment to the Children and Families Bill by a majority of 269.
This will give Health Secretary Jeremy Hunt the power to bring in a ban in England but will not immediately mean a change in the law.
Last week, more than 700 experts wrote to MPs urging them to back change. But critics say legislation is not needed.
The amendment - passed by 376 votes to 107 - empowers, but does not compel, the government to make it a criminal offence for drivers to fail to prevent smoking in their privately owned vehicles when children are present. » | Monday, February 110, 2014
