National Conference Of State Legislatures: Number Of State Legislative Seats Held By Each Party

As of November 7, 2016 (pre-election), the Ds held 3,163 state legislative seats across the 50 states, and the Rs held 4,118 seats.

As of November 10, 2016 (post-election), the Ds hold 3,135 state legislative seats across the 50 states, and the Rs hold 4,162 seats.

The Ds lost 28 seats nationally. 

The Rs picked up 44 seats.

[Seats held by third-parties and independents or on a non-partisan basis are not included.]
[Some seats are yet to be determined.]

Bottom line: the Rs picked up over 40 state legislative seats in 2016. 

The shift to the Rs represents just over 1/2 of 1% of all state legislative seats (i.e., (44) / (7,297)). Interesting, 12 House state legislative chambers and 2 Senate state legislative chambers are controlled by 5 or fewer seats. Small changes in seat distribution can have highly significant effects. 

Seth

See generally http://www.ncsl.org. 

See http://www.ncsl.org/Portals/1/Documents/Elections/Legis_Control_2016_Nov7.pdf (before). 

See http://www.ncsl.org/portals/1/documents/elections/Legis_Control_2016_Post11_10_603pm.pdf (after). 

Twitter: https://twitter.com/SethBTillman ( @SethBTillman ) 

My prior post: Seth Barrett Tillman on Irish TV & Radio, The New Reform Club (Nov. 11, 2016, 11:10 AM). [here]