Former US Attorney Michael J. Sullivan is taking a very serious look at running for US Senate, reaching out to activists and operatives and collecting signatures required to qualify for the April 30 Republican primary ballot.

But those who have spoken with Sullivan have different impressions about whether he will announce a run as early as today, given the daunting task of qualifying for the April 30 primary ballot in such a short time period. He would need to collect 10,000 signatures from certified Republican or independent voters by Feb. 27.