WASHINGTON — After a three-month delay, the Senate is acting on President Barack Obama’s request for money to combat the Zika virus.

The Senate is slated to vote Tuesday on three competing plans to battle the virus, with a bipartisan plan that cuts Obama’s $1.9 billion request to $1.1 billion having the greatest chance to advance. The procedural vote would pave the way to add funds for the government’s response to Zika to an unrelated spending bill.