Other GOP-controlled state legislatures reportedly contemplating changes to their electoral vote allocation include Pennsylvania, Ohio and Michigan.

CNN: Some GOP-led states look at electoral vote changes

The commission recommends that the second vote determining the allocation of top-up members should allow the voter the choice of either a vote for a party or for an individual candidate from the lists put forward by parties.

BBC: The Jenkins Report: What it says

Santorum needed the Texas primary on May 29, with 154 delegates at stake, to be winner-take-all instead of the proportional allocation system based on vote results now in place.

CNN: Santorum suspends campaign, clearing Romney's path