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The dominance of the right within the House Republican conference, which results from gerrymandering and is real, poses a mortal danger to those House Republicans who either represent districts with large Hispanic populations or represent suburban districts with increasingly moderate voters.

In short, the 80 percent of House Republicans who are most conservative pose a grave danger to the 20 percent of House Republicans who are least conservative and represent less conservative districts. House Speaker John BoehnerJohn BoehnerBottom Line Trump, GOP fumble chance to govern ObamaCare gets new lease on life MORE (R-Ohio) understands this, which is why he warns Republican members over immigration.

Rubio understands this, and if Hillary ClintonHillary Rodham ClintonTrump tweets: 'Trump Russia story is a hoax' Path to 60 narrows for Trump pick Overnight Cybersecurity: New questions for House Intel chair over WH visit | Cyber war debate heats up | Firm finds security flaws in 'panic buttons' MORE runs for president and Rubio runs for president, this will be clear when polls circa 2015 show Rubio running stronger against Clinton than the darlings of the right.

There could well be a majority of House votes in favor of immigration reform similar to the Senate bill, combining House Democrats and the least conservative House Republicans. BoehnerJohn BoehnerBottom Line Trump, GOP fumble chance to govern ObamaCare gets new lease on life MORE could prevent a vote, but this would gravely endanger a number of House Republicans in 2014 and threaten GOP control of the House.

Republicans have alienated blacks. They are alienating Hispanics. They have alienated many women and young voters. A "white man's party" limited to conservatives is a road to permanent minority status for the GOP. 

Marco RubioMarco RubioRepublicans giving Univision the cold shoulder: report Week ahead: Senate panel to vote on Trump's Labor pick Senators introduce new Iran sanctions MORE knows this. 

Marco Rubio is right.