In a letter Friday to Republican National Committee members, Gingrich, who failed in his bid for the Republican nomination for president this year, warned that the “Clinton-Obama majority could become as dominant as the Roosevelt majority was from 1932 to 1968 presidentially and from 1930 to 1994 in the House of of Representatives.”

Gingrich’s letter, reported in The Hill, was sent to warn that the GOP needs a major overhaul, and said he’ll spend several months working with the RNC on the project.

Gingrich said there are 25 issues the party should address, including more work to include minority communities, a push for the party to compete in big cities and a refusal to ignore parts of the country that lean Democratic.