The National Republican Congressional Committee (NRCC) has expanded its list of vulnerable members who it will focus its incumbent retention program on.

The NRCC added 15 members to its Patriot program Wednesday, and they join the 10 members who were originally put on the list.

The new members are Reps. Mike Rogers (Ala.), Mary Bono Mack (Calif.), Bill Posey (Fla.), Tom Rooney (Fla.), Mario Diaz-Balart (Fla.), Lynn Jenkins (Kan.), John FlemingJohn FlemingGOP seeks to make it 52 Louisiana Senate race heads to runoff Senate TV spending crosses 0M mark MORE (La.), Bill Cassidy (La.), Michele BachmannMichele BachmannWill Trump back women’s museum? Michele Bachmann on Trump victory: ‘God did this’ The right-wing wants a revolution, and we had better pay attention MORE (Minn.), Blaine Luetkemeyer (Mo.), Lee Terry (Neb.), Scott GarrettScott GarrettOvernight Finance: Trump expected to pick Steven Mnuchin for Treasury | Budget chair up for grabs | Trump team gets deal on Carrier jobs New House GOP campaign chairman starts with a lead How the election could reshape key finance, banking committees MORE (N.J.), Dean HellerDean HellerGovernments and businesses: Teaming up for taxpayers GOP senator won't rule out 2018 run for Nevada governor A holiday surprise: Will Congress protect privacy? MORE (Nev.), Charlie Dent (Pa.) and Cynthia LummisCynthia LummisTrump's Interior candidates would play Russian roulette with West Trump eyes House members for Cabinet jobs Trump aide dodges questions about business dealings MORE (Wyo.).

Posey, Rooney, Jenkins, Fleming, Cassidy, Luetkemeyer and Lummis are all freshman. The others were targeted by Democrats in 2008, with mixed results.

There are a few curious absences from the list so far.

One is Rep. Mike Castle (R-Del.). Several of the new Patriots had opponents raise big money against them in the second quarter, and Castle did too. Take it as a sign that the party believes there's little chance he will be seeking reelection.

Another is Rep. Bill Young (R-Fla.). Young comes from a tough district and has a solid opponent, yet seemingly less vulnerable members with no opponents are still being added to the list before him. Could be a sign of retirement.