Widespread dissatisfaction with the state of the country has opened up a prime Senate pickup opportunity for Democrats in Ohio and made for a razor-thin contest in Iowa, according to new CNN polls conducted by SSRS.

The CNN poll was conducted by SSRS from Sept. 29-Oct. 5 among a random sample of 801 likely voters in Iowa and 760 likely voters in Ohio, drawn either from a voter file or a probability-based panel. Surveys were either conducted online or by telephone with a live interviewer. Results have a margin of sampling error of up to ±5.3 percentage points in Iowa and up to ±5.8 percentage points in Ohio.