WASHINGTON  — Support for legal abortion in the U.S. has edged up to its highest level in the past two years, with an Associated Press-GfK poll showing an apparent increase in support among Democrats and Republicans alike over the last year.

Nearly six in 10 Americans — 58 percent — now think abortion should be legal in most or all cases, up from 51 percent who said so at the beginning of the year, according to the AP-GfK survey. It was conducted after three people were killed last month in a shooting at a Planned Parenthood clinic in Colorado.

While support for legal abortion edged up to 40 percent among Republicans in this month’s poll, from 35 percent in January, the survey found that the GOP remains deeply divided on the issue: Seven in 10 conservative Republicans said they want abortion to be illegal in most or all cases; six in 10 moderate and liberal Republicans said the opposite.

Count 55-year-old Victor Remdt, of Gurnee, Illinois, among the conservatives who think abortion should be illegal in most cases. He’s adopted, and said he “wouldn’t be here talking” if his birth mother had opted for abortion rather than adoption. Remdt, who’s looking for work as a commercial driver, said he’d like to see abortion laws become more restrictive but adds that he’s not a one-issue voter on the matter.