Sweeping support for a proposed Ohio constitutional amendment enshrining abortion rights spotlights the potential power of the issue to drive voter turnout and affect races up and down the ballot, even in Republican-leaning states.

A new USA TODAY Network/Suffolk University survey of Ohio showed the amendment guaranteeing access to reproductive services backed by a double-digit margin, 58%-32%. Significant support crossed partisan lines, including a third of Republicans and a stunning 85% of independent women, a key group of persuadable voters.
The poll of 500 likely voters in Ohio, conducted by landline and cell phone July 9 to 12, has a margin of error of plus or minus 4.4 percentage points for the full sample.