Of the 50 United States governors, 36 were up for election. Twenty two of those contested seats were held by Republicans, and the remaining 14 were held by Democrats. Of the 36 state governorships up for election, ten were open due to retirement, term limits, or primary loss. Although most governors serve four-year terms, the two exceptions, Vermont and New Hampshire, elect governors to two-year terms. As a result of the 2006 gubernatorial elections, there are now 28 Democratic governors and 22 Republican governors, a reversal of the numbers held by the respective parties prior to the elections.

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Nearly all state legislatures were up for election. Prior to the general elections, with the exception of the nonpartisan Nebraska Legislature, 21 legislatures were controlled by Republicans, 19 by Democrats, and nine were split legislatures (where each house is controlled by a different party). As a result of the 2006 elections, 23 legislatures were carried by Democrats, 17 by Republicans, and 9 legislatures were split. In all, Republicans lost, and Democrats gained, more than 300 state legislative seats.

http://en.wikipedia.org/wiki/United_States_elections,_2006#Governors