The total vote cast in the U.S. in regularly-scheduled elections for independent candidates for State Senate in November 2010 was 302,051 votes. When the same seats were up in November 2006, independent candidates received 152,151 votes.
Forty-two states held State Senate elections in each of those years. In most of those states, only half the seats were up. In the rare instance of multi-winner State Senate seats, when there was more than a single independent candidate, only the vote for the top vote-getting independent was included in the total.
In November 2010, independent candidates were elected to the State Senate in Alabama, Kentucky, Maine, and Rhode Island.