Potential signature fraud in Michigan threatens to disrupt congressional races

Follow live: Updates from AP’s coverage of the presidential election. LANSING, Mich. — Fraudulent signatures could upend Michigan’s congressional races this year as each declared GOP U.S. Senate candidate faces new calls to investigate their attempts to get on the August primary ballot and a Democratic U.S. House candidate appears likely to fall short. Adam Hollier, a former state senator who has garnered significant Democratic support in his primary challenge of U.S. Rep. Shri Thanedar, is expected to be kept off the August primary ballot after county election staff found he did not have enough valid signatures on nominating petitions. Republicans vying for Michigan’s open U.S. Senate seat are now facing similar allegations after state and national Democratic groups submitted a request that their nominating petitions be investigated on Friday. The Michigan Democratic Party and Democratic Senatorial Campaign Committee alleged in a letter sent to the Michigan Board of State Canvassers that the signatures on the petitions of each of the Republican Senate candidates show “patterns that indicate the presence of potential forgery and other fraudulent signature gathering tactics.” Senate candidates in Michigan had to submit 15,000 valid signatures by April 23 to qualify for the August primary election.