Crossing the Aisle: Growing Number of Republicans Won't Back Trump A look at the members of the GOP who won't back the nominee.

 -- Hewlett-Packard CEO and prominent Republican donor Meg Whitman announced today that she will vote for Hillary Clinton in November. Whitman adds her voice to a growing chorus of those on the right who are voting across the aisle, abstaining from voting, or leaving the party rather than vote for GOP nominee Donald Trump.

Here is a running roll call of Republicans defecting from the GOP:

Voting for Clinton

Rep. Richard Hanna (R-NY)

Henry Paulson, Former Treasury Secretary

Former Sen. Larry Pressler (R-SD

Former Gov. Arne Carlson (MN)

Meg Whitman: President and CEO of Hewlett-Packard, GOP donor

Maria Comella: Former Communications Director for New Jersey Gov. Chris Christie

Sally Bradshaw: Top Adviser to Jeb Bush, political strategist

Michael Bloomberg: Former Mayor of NYC, CEO of Bloomberg LP

Mark Salter: Former Chief of Staff and speechwriter for Sen. John McCain

John Stubbs and Ricardo Reyes: Former staffers in the George W. Bush administration and founders of pro-Clinton R4C16 PAC

Richard Armitage: Former Deputy Secretary of State under President George W. Bush, Assistant Secretary of Defense under President Ronald Reagan

Doug Elmets: Former White House spokesman under Reagan

Brent Scowcroft: National Security Adviser to Presidents Ford and Reagan

Jim Cicconi: Former Deputy Chief of Staff and Special Assistant to President George H.W. Bush

Charles Fried: Former U.S. Solicitor General

Frank Lavin: Former Director of Office of Political Affairs under President Reagan

Not Endorsing Trump

President George H.W. Bush

President George W. Bush

Former First Lady Barbara Bush

Jeb Bush, former presidential candidate and former governor of Florida

Condoleeza Rice: Former Secretary of State under George W. Bush

Mitt Romney: former presidential candidate and former governor of Massachussetts

Gov. Rick Snyder (MI)

Changed Their Position

Sen. Mark Kirk (R-IL): Formerly said he would support GOP nominee, now anti-Trump

Sen. Susan Collins (R-ME) : Formerly undecided, now anti-Trump

Gov. Brian Sandoval (NV): Formerly pro-Trump, now undecided

Gov. Larry Hogan (MD): Formerly undecided, now not voting Trump

Have Yet to Endorse Trump

Sen. Jeff Flake (R-AZ)

Rep. Charlie Dent (R-PA)

Never-Trump Movement

Sen. Lindsey Graham (R-SC)

Sen. Ben Sasse (R-NE)

Rep. Ileana Ros-Lehtinen (R-FL)

Rep. Mark Sanford (R-SC)

Rep. Scott Rigell (R-VA)

Rep. Carlos Curbelo (R-FL)

Rep. Bob Dold (R-IL)

Rep. Reid Ribble (R-WI)

Gov. Charlie Baker (R-MA)

Former Gov. Christine Todd Whitman (R-NJ)

Former Gov. Tom Ridge (R-PA)

Former Sen. Mel Martinez (R-FL)

Former Rep. Ron Paul (R-TX)

Stuart Stevens: Former Romney 2012 strategist

Ken Mehlman: Former Republican National Committee chairman