NEW YORK - Hillary Clinton could formally announce her 2016 presidential bid this weekend. 

The former secretary of state is expected to make her candidacy official in an online video on Sunday before traveling to Iowa. 

It was just last month that Clinton signed a lease on a building in Brooklyn Heights to reportedly house her presidential campaign headquarters. 

It will be her second run for the Democratic nomination. If she gets the ticket, she'll become the first woman presidential nominee for the two major political parties. 

Clinton is not the only one expected to make a big announcement this week. Reports say that Republican Sen. Marco Rubio may announce his candidacy in the coming days.