President Trump endorsed the Republican candidate in the race to replace Mike Pompeo in the House by saying he needs Ron Estes in Congress to help advance his plans.

Estes is the Republican candidate in Kansas' 4th District running to replace Pompeo, now Trump's CIA director. While the seat has been solidly Republican, there is some concern about it flipping in recent weeks and Republicans have been taking the special election seriously.

Trump, who recorded a robocall to advocate for Estes, said voters need to put Estes in Congress to help him.

"Ron Estes is running TODAY for Congress in the Great State of Kansas. A wonderful guy, I need his help on Healthcare & Tax Cuts (Reform)," Trump tweeted.

Ron Estes is running TODAY for Congress in the Great State of Kansas. A wonderful guy, I need his help on Healthcare & Tax Cuts (Reform). — Donald J. Trump (@realDonaldTrump) April 11, 2017



Estes is running against James Thompson, the Democratic candidate in the district.

The seat is suddenly seen as vulnerable due to the unpopularity of Kansas Gov. Sam Brownback, a Republican, and Trump's own issues in office. However, the district went for Trump by 30 points in November.

The Washington Examiner reported last week Kansas Republicans are worried about Estes' lackluster campaign and GOP heavy hitters like Sen. Ted Cruz have visited the Wichita-area district in recent days to campaign with him.