The political landscape seems increasingly difficult for the Republicans in 2018. Another Republican, Rep. Darrell Issa from California just announced he won't be running for re-election in the midterm elections.
Issa is one of the most prominent Republicans in Congress, but he also one of the most endangered. He's become the latest in a long list of vulnerable GOP incumbents to retire instead of fighting for another term in the November elections, which are expected to favor Democrats.
NBC News confirmed that Issa, who the network says made a national name for himself as an Obama administration antagonist while leading a House investigative committee, will not seek another term,
The Southern California Republican, who also happens to be the wealthiest member of Congress, has already had difficulty holding onto his seat. He was nearly unseated in 2016 when Democrat Douglas Applegate came within fewer than 2,000 votes of the incumbent. Applegate quickly declared he would mount a re-match in 2018.
The election results from the 2016 general election are also troubling for Issa. Hillary Clinton won Issa's 49th Congressional District in 2016 by over seven percent over Donald Trump. In 2012, Mitt Romney beat Barack Obama there by a similar margin.
Issa serves Orange County, which was once a fabled Republican stronghold. Clinton became the first Democrat to win the affluent area since the Great Depression as it veered away from Trump.
On Tuesday, another Southern California Republican announced he would not run for re-election. Rep. Ed Royce, who chairs the Foreign Affairs Committee, said he'd retire before November.
Issa tweeted a statement, explaining his decision to not run for re-election. He said he and his family had reached the decision.
Read the full statement below:
"Two decades ago, when I stepped away from the business I'd built to enter public service, I never could have imagined that a long-shot bid for U.S. Senate would lead to 18 years in the House of Representatives and endless opportunities to make a meaningful impact.
From the first successful recall of a sitting Governor in California history, to establishing new and stronger standards for government accountability, to protecting the Internet from harmful regulation, and enacting the nation's first open data standards, we attempted and achieved much in the service of our nation.
Together, we put an end to abusive Congressional earmarks, strengthened the Violence Against Women Act, empowered better oversight of the executive branch, and cleared the course for better intellectual property protections to stop the piracy of American ingenuity.
Throughout my service, I worked hard and never lost sight of the people our government is supposed to serve. Yet with the support of my family, I have decided that I will not seek re-election in California's 49th District.
I am forever grateful to the people of San Diego, Orange and Riverside counties for their support and affording me the honor of serving them all these years. Most humbling for me -- and for anyone who represents this area -- has been the special privilege of representing the Marines and Sailors of Camp Pendleton and their families. On countless occasions, and in every corner of the world I met them, I was inspired by their bravery and humbled by their sacrifice to keep us all safe from harm.
Representing you has been the privilege of a lifetime.
While my service to California's 49th District will be coming to an end, I will continue advocating on behalf of the causes that are most important to me, advancing public policy where I believe I can make a true and lasting difference, and continuing the fight to make our incredible nation an even better place to call home."
Observers are already expecting the Democrats to perform well in 2018. The number of Republicans retiring can't help the Republican cause in an already difficult political climate.
Eighteen Republican incumbents have said they won't run in 2018. That's seven more than the Democrats who retired ahead of the 2010 midterm elections, which swept Republicans back into power.