Yes, the big blind can raise pre-flop in poker.
Poker chips, above the amount of the call pre-flop
In a game of poker, the order of play starts with the player to the left of the dealer posting the small blind, followed by the player to their left posting the big blind. The dealer is the last to act before the flop.
In a hand of poker, the order of play starts with the player to the left of the dealer posting the small blind, followed by the player to their left posting the big blind. The dealer is the last to act before the flop, and the order of play continues clockwise from there.
In a poker game with heads-up blinds, the player in the small blind position puts in half of the minimum bet, and the player in the big blind position puts in the full minimum bet before the cards are dealt. The small blind acts first before the flop, and the big blind acts last. The blinds rotate clockwise after each hand.
In a game of poker, the player to the left of the dealer bets first after the flop.
After the flop in a game of poker, the player to the left of the dealer goes first.
In poker, the player to the left of the dealer goes first after the flop is revealed.
In poker, the player to the left of the dealer usually bets first after the flop.
a
A constitution bet relates to poker, and it simply means that it's a bet that is made on the flop, if you were the pre-flop raiser, it happens even if you do not improve your hand from the flop.
The odds of hitting a pair on the flop in Texas Hold'em poker are approximately 32.