The poll, conducted by GBA Strategies for House Majority PAC and SEIU, gives Garcia 50 percent to Rivera's 41 percent support. President Obama leads Mitt Romney in Florida's 26th District by 13 percentage points.
But this new poll does indicate that Democrats could home in on investigations surrounding Rivera to try to move the needle in its favor. Rivera is under a criminal investigation into his campaign finances, and has connections to an ongoing federal investigation into a possible shadow campaign he may have conducted for Garcia's political rival during the Democratic primary race.
When those polled were given details on these investigations, Rivera's support falls "well below the 41 percent he garners at the outset," the polling memo states, though it doesn't elaborate on how far below.
The poll was conducted among 400 likely voters in both English and Spanish from Sept. 8-13 and has a margin of error of 4.9 percentage points.