Two Republican Congressman from Florida, brothers Lincoln and Mario Diaz-Balart, could both be in serious fights to hold on to their districts, according to new polling.

The polling from Bendixen and Associates, a Florida-based firm that specializes in surveying areas with large percentages of Spanish-speakers, finds Lincoln ahead of Democratic candidate Raul Martinez by a 41%-37% margin, within the ±5% margin of error. Mario leads Dem candidate Joe Garcia by 44%-39%, also with a ±5% margin of error.

Both brothers have had pretty easy rides to re-election during their time in Congress, but this year might just be different.