Pelosi's attempt to overturn Miller-Meeks' certified Iowa win: What to know

Rep. Mariannette Miller-Meeks has been a voting member of Congress for three months, but the Iowa Republican's tenure in Washington may be short-lived depending on the outcome of the challenge to her razor-thin 2020 election victory. 

Both Hart and Miller-Meeks have made their case in writing to the House Administration Committee, the panel reviewing the election contest. If the Democratic-led committee decides to intervene, it could set up a highly-charged political scenario where the full House of Representatives would vote to decide whether Miller-Meeks or Hart should represent the southeastern Iowa district.  House Democrats currently have a narrow majority of 219 seats compared to the Republicans' 211 seats, with five vacancies. So if Hart becomes the new representative, House Speaker Nancy Pelosi, D-Calif., will have a better cushion to get the Democrats' agenda through. Republicans have launched a coordinated political campaign to fight back against the election challenge, framing it as Pelosi trying to "steal" a seat from Miller-Meeks. They are pressuring vulnerable Democrats to commit to not overturn the will of Iowa voters. House GOP Leader Kevin McCarthy, R-Calif., is amplifying the issue with a planned visit to Iowa on Wednesday.